diff --git a/.appveyor.yml b/.appveyor.yml
index 3b37ad4..5abf512 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,38 +1,30 @@
 environment:
   matrix:
-    - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x86/0.6/julia-0.6-latest-win32.exe"
-    - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x64/0.6/julia-0.6-latest-win64.exe"
-    - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
-    - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
-
-
+  - julia_version: 0.7
+  - julia_version: 1.0
+  - julia_version: nightly
+platform:
+  - x86
+  - x64
 matrix:
   allow_failures:
-    - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
-    - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
-
+  - julia_version: nightly
 notifications:
   - provider: Email
     on_build_success: false
     on_build_failure: false
     on_build_status_changed: false
-
 install:
-  - ps: "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12"
-  # Download most recent Julia Windows binary
-  - ps: (new-object net.webclient).DownloadFile(
-        $env:JULIA_URL,
-        "C:\projects\julia-binary.exe")
-  # Run installer silently, output to C:\projects\julia
-  - C:\projects\julia-binary.exe /S /D=C:\projects\julia
-
+  - ps: iex ((new-object net.webclient).DownloadString("https://raw.githubusercontent.com/JuliaCI/Appveyor.jl/version-1/bin/install.ps1"))
 build_script:
-  # Need to convert from shallow to complete for Pkg.clone to work
-  - IF EXIST .git\shallow (git fetch --unshallow)
-  - C:\projects\julia\bin\julia -e "versioninfo(); Pkg.clone(pwd(), \"PkgTemplates\")"
-
+  - echo "%JL_BUILD_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_BUILD_SCRIPT%"
 test_script:
-  - C:\projects\julia\bin\julia -e "Pkg.test(\"PkgTemplates\"; coverage=true)"
-
-after_test:
-  - C:\projects\julia\bin\julia -e "VERSION > v\"0.6.2\" && exit(); cd(Pkg.dir(\"PkgTemplates\")); Pkg.add(\"Coverage\"); using Coverage; Codecov.submit(process_folder())"
+  # Git configuration is required to make commits in generated packages.
+  - git config --global user.name "AppVeyor"
+  - git config --global user.email "appveyor@example.com"
+  - echo "%JL_TEST_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_TEST_SCRIPT%"
+on_success:
+  - echo "%JL_CODECOV_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_CODECOV_SCRIPT%"
diff --git a/.travis.yml b/.travis.yml
index ee27e97..89a1971 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,8 @@ os:
   - linux
   - osx
 julia:
-  - 0.6
+  - 0.7
+  - 1.0
   - nightly
 matrix:
   allow_failures:
@@ -11,9 +12,11 @@ matrix:
   fast_finish: true
 notifications:
   email: false
-script:
-  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-  - julia -e 'Pkg.clone(pwd()); Pkg.test("PkgTemplates"; coverage=true)'
+before_script:
+  # Git configuration is required to make commits in generated packages.
+  - git config --global user.name "Travis"
+  - git config --global user.email "travis@example.com"
 after_success:
-  - julia -e 'VERSION > v"0.6.2" && exit(); cd(Pkg.dir("PkgTemplates")); Pkg.add("Coverage"); using Coverage; Codecov.submit(process_folder())'
-  - julia -e 'Pkg.add("Documenter"); cd(Pkg.dir("PkgTemplates")); include(joinpath("docs", "make.jl"))'
+  - julia -e 'using Pkg; Pkg.add("Coverage")'
+  - julia -e 'using Coverage; CodeCov.submit(process_folder())'
+  - julia -e 'using Pkg; Pkg.add("Documenter"); include(joinpath("docs", "make.jl"))'
diff --git a/LICENSE b/LICENSE
index 390b2cd..694d072 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2017 Chris de Graaf, Invenia Technical Computing Corporation
+Copyright (c) 2017-2018 Chris de Graaf, Invenia Technical Computing Corporation
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/Manifest.toml b/Manifest.toml
new file mode 100644
index 0000000..c51e0e9
--- /dev/null
+++ b/Manifest.toml
@@ -0,0 +1,84 @@
+[[AutoHashEquals]]
+git-tree-sha1 = "45bb6705d93be619b81451bb2006b7ee5d4e4453"
+uuid = "15f4f7f2-30c1-5605-9d31-71845cf9641f"
+version = "0.2.0"
+
+[[Base64]]
+uuid = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
+
+[[Dates]]
+deps = ["Printf"]
+uuid = "ade2ca70-3891-5945-98fb-dc099432e06a"
+
+[[Distributed]]
+deps = ["LinearAlgebra", "Random", "Serialization", "Sockets"]
+uuid = "8ba89e20-285c-5b6f-9357-94700520ee1b"
+
+[[InteractiveUtils]]
+deps = ["LinearAlgebra", "Markdown"]
+uuid = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+
+[[LibGit2]]
+uuid = "76f85450-5226-5b5a-8eaa-529ad045b433"
+
+[[Libdl]]
+uuid = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
+
+[[LinearAlgebra]]
+deps = ["Libdl"]
+uuid = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+
+[[Logging]]
+uuid = "56ddb016-857b-54e1-b83d-db4d58db5568"
+
+[[Markdown]]
+deps = ["Base64"]
+uuid = "d6f4376e-aef5-505a-96c1-9c027394607a"
+
+[[Mustache]]
+deps = ["Pkg", "Test"]
+git-tree-sha1 = "fb4b57a278d18434eff78bdc2c06238f6ee3c9e7"
+uuid = "ffc61752-8dc7-55ee-8c37-f3e9cdd09e70"
+version = "0.5.1"
+
+[[Pkg]]
+deps = ["Dates", "LibGit2", "Markdown", "Printf", "REPL", "Random", "SHA", "UUIDs"]
+uuid = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+
+[[Printf]]
+deps = ["Unicode"]
+uuid = "de0858da-6303-5e67-8744-51eddeeeb8d7"
+
+[[REPL]]
+deps = ["InteractiveUtils", "Markdown", "Sockets"]
+uuid = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
+
+[[Random]]
+deps = ["Serialization"]
+uuid = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+
+[[SHA]]
+uuid = "ea8e919c-243c-51af-8825-aaa63cd721ce"
+
+[[Serialization]]
+uuid = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
+
+[[Sockets]]
+uuid = "6462fe0b-24de-5631-8697-dd941f90decc"
+
+[[Test]]
+deps = ["Distributed", "InteractiveUtils", "Logging", "Random"]
+uuid = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[[URIParser]]
+deps = ["Test", "Unicode"]
+git-tree-sha1 = "6ddf8244220dfda2f17539fa8c9de20d6c575b69"
+uuid = "30578b45-9adc-5946-b283-645ec420af67"
+version = "0.4.0"
+
+[[UUIDs]]
+deps = ["Random"]
+uuid = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
+
+[[Unicode]]
+uuid = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
diff --git a/Project.toml b/Project.toml
new file mode 100644
index 0000000..a238339
--- /dev/null
+++ b/Project.toml
@@ -0,0 +1,15 @@
+name = "PkgTemplates"
+uuid = "19f0ff7e-bab4-11e8-074b-97459630f98a"
+authors = ["Chris de Graaf <chrisadegraaf@gmail.com>"]
+version = "0.1.0"
+
+[deps]
+AutoHashEquals = "15f4f7f2-30c1-5605-9d31-71845cf9641f"
+Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
+Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
+InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+LibGit2 = "76f85450-5226-5b5a-8eaa-529ad045b433"
+Mustache = "ffc61752-8dc7-55ee-8c37-f3e9cdd09e70"
+REPL = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+URIParser = "30578b45-9adc-5946-b283-645ec420af67"
diff --git a/REQUIRE b/REQUIRE
index a652844..e172632 100644
--- a/REQUIRE
+++ b/REQUIRE
@@ -1,5 +1,4 @@
-julia 0.6
+julia 0.7
 AutoHashEquals
 Mustache
-TerminalMenus
 URIParser
diff --git a/defaults/appveyor.yml b/defaults/appveyor.yml
index c3c13e2..6ae2557 100644
--- a/defaults/appveyor.yml
+++ b/defaults/appveyor.yml
@@ -36,8 +36,14 @@ build_script:
   - C:\projects\julia\bin\julia -e "versioninfo(); Pkg.clone(pwd(), \"{{PKGNAME}}\"); Pkg.build(\"{{PKGNAME}}\")"
 
 test_script:
-  - C:\projects\julia\bin\julia -e "Pkg.test(\"{{PKGNAME}}\"{{#AFTER}}; coverage=true{{/AFTER}})"{{#AFTER}}
+  - C:\projects\julia\bin\julia -e "Pkg.test(\"{{PKGNAME}}\"{{#AFTER}}; coverage=true{{/AFTER}})"
+{{#AFTER}}
 
-after_test:{{#CODECOV}}
-  - C:\projects\julia\bin\julia -e "cd(Pkg.dir(\"{{PKGNAME}}\")); Pkg.add(\"Coverage\"); using Coverage; Codecov.submit(process_folder())"{{/CODECOV}}{{#COVERALLS}}
-  - C:\projects\julia\bin\julia -e "cd(Pkg.dir(\"{{PKGNAME}}\")); Pkg.add(\"Coverage\"); using Coverage; Coveralls.submit(process_folder())"{{/COVERALLS}}{{/AFTER}}
+after_test:
+{{#CODECOV}}
+  - C:\projects\julia\bin\julia -e "cd(Pkg.dir(\"{{PKGNAME}}\")); Pkg.add(\"Coverage\"); using Coverage; Codecov.submit(process_folder())"
+{{/CODECOV}}
+{{#COVERALLS}}
+  - C:\projects\julia\bin\julia -e "cd(Pkg.dir(\"{{PKGNAME}}\")); Pkg.add(\"Coverage\"); using Coverage; Coveralls.submit(process_folder())"
+{{/COVERALLS}}
+{{/AFTER}}
diff --git a/defaults/gitlab-ci.yml b/defaults/gitlab-ci.yml
index 4120002..49f1693 100644
--- a/defaults/gitlab-ci.yml
+++ b/defaults/gitlab-ci.yml
@@ -1,19 +1,25 @@
-{{#GITLABCOVERAGE}}stages:
+{{#GITLABCOVERAGE}}
+stages:
   - test
   - coverage
 
-{{/GITLABCOVERAGE}}.test_template: &test_template
-  stage: test{{#GITLABCOVERAGE}}
+{{/GITLABCOVERAGE}}
+.test_template: &test_template
+  stage: test
+{{#GITLABCOVERAGE}}
   artifacts:
     name: coverage
     expire_in: 2 hours
     paths:
-      - coverage/{{/GITLABCOVERAGE}}
+      - coverage/
+{{/GITLABCOVERAGE}}
   tags:
     - docker
   script:
-    - julia -e 'Pkg.clone(pwd()); Pkg.build("{{PKGNAME}}"); Pkg.test("{{PKGNAME}}"{{#GITLABCOVERAGE}}; coverage=true{{/GITLABCOVERAGE}})'{{#GITLABCOVERAGE}}
-    - cp -r $(julia -e 'print(Pkg.dir("{{PKGNAME}}", "src"))') coverage{{/GITLABCOVERAGE}}
+    - julia -e 'Pkg.clone(pwd()); Pkg.build("{{PKGNAME}}"); Pkg.test("{{PKGNAME}}"{{#GITLABCOVERAGE}}; coverage=true{{/GITLABCOVERAGE}})'
+{{#GITLABCOVERAGE}}
+    - cp -r $(julia -e 'print(Pkg.dir("{{PKGNAME}}", "src"))') coverage
+{{/GITLABCOVERAGE}}
 
 Julia {{VERSION}}:
   image: julia:{{VERSION}}
@@ -22,7 +28,8 @@ Julia {{VERSION}}:
 Julia nightly:
   image: staticfloat/julia:nightly-x64
   allow_failure: true
-  <<: *test_template{{#GITLABCOVERAGE}}
+  <<: *test_template
+{{#GITLABCOVERAGE}}
 
 "Coverage":
   stage: coverage
@@ -34,4 +41,5 @@ Julia nightly:
     - apt-get update && apt-get -y install git make unzip gcc bzip2
   script:
     - rm -rf src && mv coverage src
-    - julia -e 'Pkg.add("Coverage"); using Coverage; c, t = get_summary(process_folder()); @printf("Test Coverage %.2f%%\n", 100c/t)'{{/GITLABCOVERAGE}}
+    - julia -e 'Pkg.add("Coverage"); using Coverage; c, t = get_summary(process_folder()); @printf("Test Coverage %.2f%%\n", 100c/t)'
+{{/GITLABCOVERAGE}}
diff --git a/defaults/travis.yml b/defaults/travis.yml
index cf1020a..7c4b7eb 100644
--- a/defaults/travis.yml
+++ b/defaults/travis.yml
@@ -14,8 +14,16 @@ notifications:
   email: false
 script:
   - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-  - julia -e 'Pkg.clone(pwd()); Pkg.build("{{PKGNAME}}"); Pkg.test("{{PKGNAME}}"{{#AFTER}}; coverage=true{{/AFTER}})'{{#AFTER}}
-after_success:{{#CODECOV}}
-  - julia -e 'cd(Pkg.dir("{{PKGNAME}}")); Pkg.add("Coverage"); using Coverage; Codecov.submit(process_folder())'{{/CODECOV}}{{#COVERALLS}}
-  - julia -e 'cd(Pkg.dir("{{PKGNAME}}")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(process_folder())'{{/COVERALLS}}{{#DOCUMENTER}}
-  - julia -e 'Pkg.add("Documenter"); cd(Pkg.dir("{{PKGNAME}}")); include(joinpath("docs", "make.jl"))'{{/DOCUMENTER}}{{/AFTER}}
+  - julia -e 'Pkg.clone(pwd()); Pkg.build("{{PKGNAME}}"); Pkg.test("{{PKGNAME}}"{{#AFTER}}; coverage=true{{/AFTER}})'
+{{#AFTER}}
+after_success:
+{{#CODECOV}}
+  - julia -e 'cd(Pkg.dir("{{PKGNAME}}")); Pkg.add("Coverage"); using Coverage; Codecov.submit(process_folder())'
+{{/CODECOV}}
+{{#COVERALLS}}
+  - julia -e 'cd(Pkg.dir("{{PKGNAME}}")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(process_folder())'
+{{/COVERALLS}}
+{{#DOCUMENTER}}
+  - julia -e 'Pkg.add("Documenter"); cd(Pkg.dir("{{PKGNAME}}")); include(joinpath("docs", "make.jl"))'
+{{/DOCUMENTER}}
+{{/AFTER}}
diff --git a/docs/src/pages/plugins.md b/docs/src/pages/plugins.md
index 57d1ab9..57bab20 100644
--- a/docs/src/pages/plugins.md
+++ b/docs/src/pages/plugins.md
@@ -4,7 +4,7 @@ CurrentModule = PkgTemplates
 
 # Plugins
 
-Plugins are the secret sauce behing `PkgTemplates`'s customization and extension. This page
+Plugins are the secret sauce behind `PkgTemplates`'s customization and extension. This page
 describes plugins that already exist; for information on writing your own plugins, see
 [Plugin Development](@ref).
 
diff --git a/src/PkgTemplates.jl b/src/PkgTemplates.jl
index b7bfd96..407d0f6 100644
--- a/src/PkgTemplates.jl
+++ b/src/PkgTemplates.jl
@@ -2,8 +2,12 @@ __precompile__()
 module PkgTemplates
 
 using AutoHashEquals
+using Dates
+using Distributed
+using InteractiveUtils
+using LibGit2
 using Mustache
-using TerminalMenus
+using REPL.TerminalMenus
 using URIParser
 
 export
diff --git a/src/generate.jl b/src/generate.jl
index 9f18483..a5c31b3 100644
--- a/src/generate.jl
+++ b/src/generate.jl
@@ -5,7 +5,7 @@
         force::Bool=false,
         ssh::Bool=false,
         backup_dir::AbstractString="",
-    ) -> Void
+    ) -> Nothing
 
 Generate a package named `pkg_name` from `template`.
 
@@ -42,7 +42,7 @@ function generate(
     ssh::Bool=false,
     backup_dir::AbstractString="",
 )
-    pkg_name = Pkg.splitjl(pkg_name)
+    pkg_name = splitjl(pkg_name)
     pkg_dir = joinpath(t.dir, pkg_name)
     temp_pkg_dir = joinpath(dir, pkg_name)
 
@@ -54,15 +54,15 @@ function generate(
 
     # Initialize the repo and configure it.
     repo = LibGit2.init(temp_pkg_dir)
-    info("Initialized git repo at $temp_pkg_dir")
+    @info "Initialized git repo at $temp_pkg_dir"
     LibGit2.with(LibGit2.GitConfig, repo) do cfg
         for (key, val) in t.gitconfig
             LibGit2.set!(cfg, key, val)
         end
     end
-    !isempty(t.gitconfig) && info("Applied git configuration")
+    !isempty(t.gitconfig) && @info "Applied git configuration"
     LibGit2.commit(repo, "Initial commit")
-    info("Made empty initial commit")
+    @info "Made empty initial commit"
     rmt = if ssh
         "git@$(t.host):$(t.user)/$pkg_name.jl.git"
     else
@@ -70,13 +70,13 @@ function generate(
     end
     # We need to set the remote in a strange way, see #8.
     close(LibGit2.GitRemote(repo, "origin", rmt))
-    info("Set remote origin to $rmt")
+    @info "Set remote origin to $rmt"
 
     # Create the gh-pages branch if necessary.
     if haskey(t.plugins, GitHubPages)
         LibGit2.branch!(repo, "gh-pages")
         LibGit2.commit(repo, "Empty initial commit")
-        info("Created empty gh-pages branch")
+        @info "Created empty gh-pages branch"
         LibGit2.branch!(repo, "master")
     end
 
@@ -92,14 +92,14 @@ function generate(
     )
 
     LibGit2.add!(repo, files...)
-    info("Staged $(length(files)) files/directories: $(join(files, ", "))")
+    @info "Staged $(length(files)) files/directories: $(join(files, ", "))"
     LibGit2.commit(repo, "Files generated by PkgTemplates")
-    info("Committed files generated by PkgTemplates")
+    @info "Committed files generated by PkgTemplates"
     multiple_branches = length(collect(LibGit2.GitBranchIter(repo))) > 1
     try
         mkpath(dirname(pkg_dir))
-        mv(temp_pkg_dir, pkg_dir; remove_destination=force)
-        info("Moved temporary package directory into $(t.dir)/")
+        mv(temp_pkg_dir, pkg_dir; force=force)
+        @info "Moved temporary package directory into $(t.dir)/"
     catch  # Likely cause is that t.dir can't be created (is a file, etc.).
         # We're just going to trust that backup_dir is a valid directory.
         backup_dir = if isempty(backup_dir)
@@ -109,12 +109,12 @@ function generate(
         end
         mkpath(backup_dir)
         mv(temp_pkg_dir, joinpath(backup_dir, pkg_name))
-        warn("$pkg_name couldn't be moved into $pkg_dir, left package in $backup_dir")
+        @warn "$pkg_name couldn't be moved into $pkg_dir, left package in $backup_dir"
     end
 
-    info("Finished")
+    @info "Finished"
     if multiple_branches
-        warn("Remember to push all created branches to your remote: git push --all")
+        @info "Remember to push all created branches to your remote: git push --all"
     end
 end
 
@@ -135,7 +135,7 @@ end
         ssh::Bool=false,
         backup_dir::AbstractString="",
         fast::Bool=false,
-    ) -> Void
+    ) -> Nothing
 
 Interactively create a template, and then generate a package with it. Arguments and
 keywords are used in the same way as in [`generate`](@ref) and
@@ -426,3 +426,10 @@ function substitute(
     d["AFTER"] = d["DOCUMENTER"] || d["CODECOV"] || d["COVERALLS"]
     return substitute(template, merge(d, view))
 end
+
+"""
+    splitjl(pkg::AbstractString) -> AbstractString
+
+Remove ".jl" from the end of a package name if it is present.
+"""
+splitjl(pkg::AbstractString) = endswith(pkg, ".jl") ? pkg[1:end-3] : pkg
diff --git a/src/licenses.jl b/src/licenses.jl
index 3e26478..a0d1787 100644
--- a/src/licenses.jl
+++ b/src/licenses.jl
@@ -8,24 +8,24 @@ const LICENSES = Dict(
     "GPL-2.0+" => "GNU Public License, Version 2.0+",
     "GPL-3.0+" => "GNU Public License, Version 3.0+",
     "LGPL-2.1+" => "Lesser GNU Public License, Version 2.1+",
-    "LGPL-3.0+" => "Lesser GNU Public License, Version 3.0+"
+    "LGPL-3.0+" => "Lesser GNU Public License, Version 3.0+",
 )
 
 """
-    available_licenses([io::IO]) -> Void
+    available_licenses([io::IO]) -> Nothing
 
 Print the names of all available licenses.
 """
-available_licenses(io::IO) = println(io, join(("$k: $v" for (k, v) in LICENSES), "\n"))
-available_licenses() = available_licenses(STDOUT)
+available_licenses(io::IO) = print(io, join(("$k: $v" for (k, v) in LICENSES), "\n"))
+available_licenses() = available_licenses(stdout)
 
 """
-    show_license([io::IO], license::AbstractString) -> Void
+    show_license([io::IO], license::AbstractString) -> Nothing
 
 Print the text of `license`. Errors if the license is not found.
 """
-show_license(io::IO, license::AbstractString) = println(io, read_license(license))
-show_license(license::AbstractString) = show_license(STDOUT, license)
+show_license(io::IO, license::AbstractString) = print(io, read_license(license))
+show_license(license::AbstractString) = show_license(stdout, license)
 
 """
     read_license(license::AbstractString) -> String
diff --git a/src/plugin.jl b/src/plugin.jl
index 87a74f3..6f73ec6 100644
--- a/src/plugin.jl
+++ b/src/plugin.jl
@@ -1,5 +1,3 @@
-import Base.show
-
 """
 Generic plugins are plugins that add any number of patterns to the generated package's
 `.gitignore`, and have at most one associated file to generate.
@@ -7,7 +5,7 @@ Generic plugins are plugins that add any number of patterns to the generated pac
 # Attributes
 * `gitignore::Vector{AbstractString}`: Array of patterns to be added to the `.gitignore` of
   generated packages that use this plugin.
-* `src::Nullable{AbstractString}`: Path to the file that will be copied into the generated
+* `src::Union{AbstractString, Nothing}`: Path to the file that will be copied into the generated
   package repository. If set to `nothing`, no file will be generated. When this defaults
   to an empty string, there should be a default file in `defaults` that will be copied.
   That file's name is usually the same as the plugin's name, except in all lowercase and
@@ -25,12 +23,12 @@ Generic plugins are plugins that add any number of patterns to the generated pac
 ```julia
 @auto_hash_equals struct MyPlugin <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
 
-    function MyPlugin(; config_file::Union{AbstractString, Void}="")
+    function MyPlugin(; config_file::Union{AbstractString, Nothing}="")
         if config_file != nothing
             config_file = if isempty(config_file)
                 joinpath(DEFAULTS_DIR, "my-plugin.toml")
@@ -69,14 +67,14 @@ config template file doesn't follow the generic naming convention, we added anot
 """
 abstract type GenericPlugin <: Plugin end
 
-function show(io::IO, p::GenericPlugin)
+function Base.show(io::IO, p::GenericPlugin)
     spc = "  "
-    println(io, "$(Base.datatype_name(typeof(p))):")
+    println(io, "$(nameof(typeof(p))):")
 
-    cfg = if isnull(p.src)
+    cfg = if p.src === nothing
         "None"
     else
-        dirname(get(p.src)) == DEFAULTS_DIR ? "Default" : get(p.src)
+        dirname(p.src) == DEFAULTS_DIR ? "Default" : p.src
     end
     println(io, "$spc→ Config file: $cfg")
 
@@ -213,13 +211,11 @@ function gen_plugin(
     dir::AbstractString,
     pkg_name::AbstractString,
 )
-    src = try
-        get(plugin.src)
-    catch
+    if plugin.src === nothing
         return String[]
     end
     text = substitute(
-        readstring(src),
+        read(plugin.src, String),
         template;
         view=merge(Dict("PKGNAME" => pkg_name), plugin.view),
     )
@@ -250,7 +246,7 @@ end
 """
     interactive(
         plugin_type::Type{<:Plugin};
-        file::Union{AbstractString, Void}="",
+        file::Union{AbstractString, Nothing}="",
     ) -> Plugin
 
 Interactively create a plugin of type `plugin_type`, where `file` is the plugin type's
@@ -259,7 +255,7 @@ default config template with a non-standard name (for `MyPlugin`, this is anythi
 """
 function interactive(
     plugin_type::Type{<:GenericPlugin};
-    file::Union{AbstractString, Void}="",
+    file::Union{AbstractString, Nothing}="",
 )
     plugin_name = String(split(string(plugin_type), ".")[end])
     # By default, we expect the default plugin file template for a plugin called
@@ -270,7 +266,7 @@ function interactive(
     if default_config_file == nothing
         print("[None]: ")
     else
-        print("[$(replace(default_config_file, homedir(), "~"))]: ")
+        print("[$(replace(default_config_file, homedir() => "~"))]: ")
     end
     config_file = readline()
     config_file = if uppercase(config_file) == "NONE"
diff --git a/src/plugins/appveyor.jl b/src/plugins/appveyor.jl
index 8b0e65c..857d188 100644
--- a/src/plugins/appveyor.jl
+++ b/src/plugins/appveyor.jl
@@ -1,21 +1,21 @@
 """
-    AppVeyor(; config_file::Union{AbstractString, Void}="") -> AppVeyor
+    AppVeyor(; config_file::Union{AbstractString, Nothing}="") -> AppVeyor
 
 Add `AppVeyor` to a template's plugins to add a `.appveyor.yml` configuration file to
 generated repositories, and an appropriate badge to the README.
 
 # Keyword Arguments
-* `config_file::Union{AbstractString, Void}=""`: Path to a custom `.appveyor.yml`.
+* `config_file::Union{AbstractString, Nothing}=""`: Path to a custom `.appveyor.yml`.
   If `nothing` is supplied, no file will be generated.
 """
 @auto_hash_equals struct AppVeyor <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
 
-    function AppVeyor(; config_file::Union{AbstractString, Void}="")
+    function AppVeyor(; config_file::Union{AbstractString, Nothing}="")
         if config_file != nothing
             config_file = if isempty(config_file)
                 config_file = joinpath(DEFAULTS_DIR, "appveyor.yml")
diff --git a/src/plugins/codecov.jl b/src/plugins/codecov.jl
index ae54f52..c605d0d 100644
--- a/src/plugins/codecov.jl
+++ b/src/plugins/codecov.jl
@@ -1,22 +1,22 @@
 """
-    CodeCov(; config_file::Union{AbstractString, Void}=nothing) -> CodeCov
+    CodeCov(; config_file::Union{AbstractString, Nothing}=nothing) -> CodeCov
 
 Add `CodeCov` to a template's plugins to optionally add a `.codecov.yml` configuration file
 to generated repositories, and an appropriate badge to the README. Also updates the
 `.gitignore` accordingly.
 
 # Keyword Arguments:
-* `config_file::Union{AbstractString, Void}=nothing`: Path to a custom `.codecov.yml`.
+* `config_file::Union{AbstractString, Nothing}=nothing`: Path to a custom `.codecov.yml`.
   If left unset, no file will be generated.
 """
 @auto_hash_equals struct CodeCov <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
 
-    function CodeCov(; config_file::Union{AbstractString, Void}=nothing)
+    function CodeCov(; config_file::Union{AbstractString, Nothing}=nothing)
         if config_file != nothing
             config_file = if isfile(config_file)
                 abspath(config_file)
diff --git a/src/plugins/coveralls.jl b/src/plugins/coveralls.jl
index 0ebb087..1406db7 100644
--- a/src/plugins/coveralls.jl
+++ b/src/plugins/coveralls.jl
@@ -1,22 +1,22 @@
 """
-    Coveralls(; config_file::Union{AbstractString, Void}=nothing) -> Coveralls
+    Coveralls(; config_file::Union{AbstractString, Nothing}=nothing) -> Coveralls
 
 Add `Coveralls` to a template's plugins to optionally add a `.coveralls.yml` configuration
 file to generated repositories, and an appropriate badge to the README. Also updates the
 `.gitignore` accordingly.
 
 # Keyword Arguments:
-* `config_file::Union{AbstractString, Void}=nothing`: Path to a custom `.coveralls.yml`.
+* `config_file::Union{AbstractString, Nothing}=nothing`: Path to a custom `.coveralls.yml`.
   If left unset, no file will be generated.
 """
 @auto_hash_equals struct Coveralls <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
 
-    function Coveralls(; config_file::Union{AbstractString, Void}=nothing)
+    function Coveralls(; config_file::Union{AbstractString, Nothing}=nothing)
         if config_file != nothing
             config_file = if isfile(config_file)
                 abspath(config_file)
diff --git a/src/plugins/documenter.jl b/src/plugins/documenter.jl
index 76560ce..51b4787 100644
--- a/src/plugins/documenter.jl
+++ b/src/plugins/documenter.jl
@@ -1,5 +1,3 @@
-import Base.show
-
 """
 Add a `Documenter` subtype to a template's plugins to add support for documentation
 generation via [Documenter.jl](https://github.com/JuliaDocs/Documenter.jl).
@@ -25,13 +23,12 @@ function gen_plugin(
         #         assets/file1,
         #         assets/file2,
         #     ]
-        const TAB = repeat(" ", 4)
+        tab = repeat(" ", 4)
         assets_string = "[\n"
         for asset in plugin.assets
-            assets_string *= """$(TAB^2)"assets/$(basename(asset))",\n"""
+            assets_string *= """$(tab^2)"assets/$(basename(asset))",\n"""
         end
-        assets_string *= "$TAB]"
-
+        assets_string *= "$tab]"
     else
         assets_string = "[]"
     end
@@ -57,13 +54,13 @@ function gen_plugin(
     end
     readme_path = joinpath(dir, pkg_name, "README.md")
     if isfile(readme_path)
-        cp(readme_path, joinpath(docs_dir, "index.md"), remove_destination=true)
+        cp(readme_path, joinpath(docs_dir, "index.md"), force=true)
     end
 end
 
-function show(io::IO, p::Documenter)
+function Base.show(io::IO, p::Documenter)
     spc = "  "
-    println(io, "$(Base.datatype_name(typeof(p))):")
+    println(io, "$(nameof(typeof(p))):")
 
     n = length(p.assets)
     s = n == 1 ? "" : "s"
@@ -71,7 +68,7 @@ function show(io::IO, p::Documenter)
     if n == 0
         println(io)
     else
-        println(io, ": $(join(map(a -> replace(a, homedir(), "~"), p.assets), ", "))")
+        println(io, ": $(join(map(a -> replace(a, homedir() => "~"), p.assets), ", "))")
     end
 
     n = length(p.gitignore)
@@ -81,7 +78,7 @@ function show(io::IO, p::Documenter)
 end
 
 function interactive(plugin_type::Type{<:Documenter})
-    t = Base.datatype_name(plugin_type)
+    t = nameof(plugin_type)
     print("$t: Enter any Documenter asset files (separated by spaces) []: ")
     return plugin_type(; assets=String.(split(readline())))
 end
diff --git a/src/plugins/gitlabci.jl b/src/plugins/gitlabci.jl
index 1b63204..c91f4f2 100644
--- a/src/plugins/gitlabci.jl
+++ b/src/plugins/gitlabci.jl
@@ -1,23 +1,23 @@
 """
-    GitLabCI(; config_file::Union{AbstractString, Void}="", coverage::Bool=true) -> GitLabCI
+    GitLabCI(; config_file::Union{AbstractString, Nothing}="", coverage::Bool=true) -> GitLabCI
 
 Add `GitLabCI` to a template's plugins to add a `.gitlab-ci.yml` configuration file to
 generated repositories, and appropriate badge(s) to the README.
 
 # Keyword Arguments:
-* `config_file::Union{AbstractString, Void}=""`: Path to a custom `.gitlab-ci.yml`.
+* `config_file::Union{AbstractString, Nothing}=""`: Path to a custom `.gitlab-ci.yml`.
   If `nothing` is supplied, no file will be generated.
 * `coverage::Bool=true`: Whether or not GitLab CI's built-in code coverage analysis should
   be enabled.
 """
 @auto_hash_equals struct GitLabCI <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
 
-    function GitLabCI(; config_file::Union{AbstractString, Void}="", coverage::Bool=true)
+    function GitLabCI(; config_file::Union{AbstractString, Nothing}="", coverage::Bool=true)
         if config_file != nothing
             config_file = if isempty(config_file)
                 config_file = joinpath(DEFAULTS_DIR, "gitlab-ci.yml")
diff --git a/src/plugins/travisci.jl b/src/plugins/travisci.jl
index 12401ee..1f1c46e 100644
--- a/src/plugins/travisci.jl
+++ b/src/plugins/travisci.jl
@@ -1,21 +1,21 @@
 """
-    TravisCI(; config_file::Union{AbstractString, Void}="") -> TravisCI
+    TravisCI(; config_file::Union{AbstractString, Nothing}="") -> TravisCI
 
 Add `TravisCI` to a template's plugins to add a `.travis.yml` configuration file to
 generated repositories, and an appropriate badge to the README.
 
 # Keyword Arguments:
-* `config_file::Union{AbstractString, Void}=""`: Path to a custom `.travis.yml`.
+* `config_file::Union{AbstractString, Nothing}=""`: Path to a custom `.travis.yml`.
   If `nothing` is supplied, no file will be generated.
 """
 @auto_hash_equals struct TravisCI <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
 
-    function TravisCI(; config_file::Union{AbstractString, Void}="")
+    function TravisCI(; config_file::Union{AbstractString, Nothing}="")
         if config_file != nothing
             config_file = if isempty(config_file)
                 config_file = joinpath(DEFAULTS_DIR, "travis.yml")
@@ -32,8 +32,8 @@ generated repositories, and an appropriate badge to the README.
             [
                 Badge(
                     "Build Status",
-                    "https://travis-ci.org/{{USER}}/{{PKGNAME}}.jl.svg?branch=master",
-                    "https://travis-ci.org/{{USER}}/{{PKGNAME}}.jl",
+                    "https://travis-ci.com/{{USER}}/{{PKGNAME}}.jl.svg?branch=master",
+                    "https://travis-ci.com/{{USER}}/{{PKGNAME}}.jl",
                 ),
             ],
             Dict{String, Any}(),
diff --git a/src/template.jl b/src/template.jl
index 7695061..90fed90 100644
--- a/src/template.jl
+++ b/src/template.jl
@@ -1,4 +1,9 @@
-import Base.show
+"""
+    dev_dir() -> String
+
+Get the default development directory (~/.julia/dev).
+"""
+dev_dir() = joinpath(first(DEPOT_PATH), "dev")
 
 """
     Template(; kwargs...) -> Template
@@ -24,10 +29,10 @@ create a template, you can use [`interactive_template`](@ref) instead.
   license. Supply a string for one author or an array for multiple. Similarly to `user`,
   it will try to take the value of a supplied git config's "user.name" key, then the global
   git config's value, if it is left unset.
-* `years::Union{Integer, AbstractString}=Dates.year(Dates.today())`: Copyright years on the
-  license. Can be supplied by a number, or a string such as "2016 - 2017".
-* `dir::AbstractString=Pkg.dir()`: Directory in which the package will go. Relative paths
-  are converted to absolute ones at template creation time.
+* `years::Union{Integer, AbstractString}=$(Dates.year(Dates.today()))`: Copyright years on
+  the license. Can be supplied by a number, or a string such as "2016 - 2017".
+* `dir::AbstractString=$(dev_dir())`: Directory in which the package will go. Relative
+  paths are converted to absolute ones at template creation time.
 * `precompile::Bool=true`: Whether or not to enable precompilation in generated packages.
 * `julia_version::VersionNumber=VERSION`: Minimum allowed Julia version.
 * `requirements::Vector{<:AbstractString}=String[]`: Package requirements. If there are
@@ -53,10 +58,10 @@ create a template, you can use [`interactive_template`](@ref) instead.
     function Template(;
         user::AbstractString="",
         host::AbstractString="https://github.com",
-        license::Union{AbstractString, Void}="MIT",
+        license::AbstractString="MIT",
         authors::Union{AbstractString, Vector{<:AbstractString}}="",
         years::Union{Integer, AbstractString}=Dates.year(Dates.today()),
-        dir::AbstractString=Pkg.dir(),
+        dir::AbstractString=dev_dir(),
         precompile::Bool=true,
         julia_version::VersionNumber=VERSION,
         requirements::Vector{<:AbstractString}=String[],
@@ -98,12 +103,12 @@ create a template, you can use [`interactive_template`](@ref) instead.
                 "requirements contains duplicate packages with conflicting versions"
             ))
         elseif diff > 0
-            warn("Removed $(diff) duplicate$(diff == 1 ? "" : "s") from requirements")
+            @warn "Removed $(diff) duplicate$(diff == 1 ? "" : "s") from requirements"
         end
 
         plugin_dict = Dict{DataType, Plugin}(typeof(p) => p for p in plugins)
         if (length(plugins) != length(plugin_dict))
-            warn("Plugin list contained duplicates, only the last of each type was kept")
+            @warn "Plugin list contained duplicates, only the last of each type was kept"
         end
 
         new(
@@ -113,7 +118,7 @@ create a template, you can use [`interactive_template`](@ref) instead.
     end
 end
 
-function show(io::IO, t::Template)
+function Base.show(io::IO, t::Template)
     maybe_none(s::AbstractString) = isempty(string(s)) ? "None" : string(s)
     spc = "  "
 
@@ -128,7 +133,7 @@ function show(io::IO, t::Template)
         println(io, "$(t.license) ($(t.authors) $(t.years))")
     end
 
-    println(io, "$spc→ Package directory: $(replace(maybe_none(t.dir), homedir(), "~"))")
+    println(io, "$spc→ Package directory: $(replace(maybe_none(t.dir), homedir() => "~"))")
     println(io, "$spc→ Precompilation enabled: $(t.precompile ? "Yes" : "No")")
     println(io, "$spc→ Minimum Julia version: v$(version_floor(t.julia_version))")
 
@@ -173,7 +178,7 @@ Interactively create a [`Template`](@ref). If `fast` is set, defaults will be as
 all values except username and plugins.
 """
 function interactive_template(; fast::Bool=false)
-    info("Default values are shown in [brackets]")
+    @info "Default values are shown in [brackets]"
     # Getting the leaf types in a separate thread eliminates an awkward wait after
     # "Select plugins" is printed.
     plugin_types = @spawn leaves(Plugin)
@@ -206,7 +211,7 @@ function interactive_template(; fast::Bool=false)
         io = IOBuffer()
         available_licenses(io)
         licenses = ["" => "", collect(LICENSES)...]
-        menu = RadioMenu(["None", split(String(take!(io)), "\n")...])
+        menu = RadioMenu(String["None", split(String(take!(io)), "\n")...])
         # If the user breaks out of the menu with Ctrl-c, the result is -1, the absolute
         # value of which correponds to no license.
         licenses[abs(request(menu))].first
@@ -235,9 +240,9 @@ function interactive_template(; fast::Bool=false)
     end
 
     kwargs[:dir] = if fast
-        Pkg.dir()
+        dev_dir()
     else
-        default_dir = Pkg.dir()
+        default_dir = dev_dir()
         print("Enter the path to the package directory [$default_dir]: ")
         dir = readline()
         isempty(dir) ? default_dir : dir
@@ -276,7 +281,7 @@ function interactive_template(; fast::Bool=false)
             isempty(line) && break
             tokens = split(line, " ", limit=2)
             if haskey(gitconfig, tokens[1])
-                warn("Duplicate key '$(tokens[1])': Replacing old value '$(tokens[2])'")
+                @warn "Duplicate key '$(tokens[1])': Replacing old value '$(tokens[2])'"
             end
             gitconfig[tokens[1]] = tokens[2]
         end
@@ -285,7 +290,7 @@ function interactive_template(; fast::Bool=false)
 
     println("Select plugins:")
     # Only include plugin types which have an `interactive` method.
-    plugin_types = filter(t -> method_exists(interactive, (Type{t},)), fetch(plugin_types))
+    plugin_types = filter(t -> hasmethod(interactive, (Type{t},)), fetch(plugin_types))
     type_names = map(t -> split(string(t), ".")[end], plugin_types)
     menu = MultiSelectMenu(String.(type_names); pagesize=length(type_names))
     selected = collect(request(menu))
@@ -301,4 +306,4 @@ end
 
 Get all concrete subtypes of `t`.
 """
-leaves(t::Type)::Vector{DataType} = isleaftype(t) ? [t] : vcat(leaves.(subtypes(t))...)
+leaves(t::Type)::Vector{DataType} = isconcretetype(t) ? [t] : vcat(leaves.(subtypes(t))...)
diff --git a/test/interactive/interactive.jl b/test/interactive/interactive.jl
index 51ec178..df4743b 100644
--- a/test/interactive/interactive.jl
+++ b/test/interactive/interactive.jl
@@ -2,30 +2,30 @@
 # which seems to be the case in Travis CI OSX builds.
 # https://travis-ci.org/invenia/PkgTemplates.jl/jobs/267682403#L115
 # https://github.com/nick-paul/TerminalMenus.jl/issues/5
-# This also affects any time we write to STDIN.buffer, because
+# This also affects any time we write to stdin.buffer, because
 # IOStreams do not have that attribute.
 # Therefore, we skip any interactive tests on OSX builds.
 
 @testset "Interactive template creation" begin
-    write(STDIN.buffer, "$me\n\n\r\n\n\n\n\nd")
+    write(stdin.buffer, "$me\n\n\r\n\n\n\n\nd")
     t = interactive_template()
     @test t.user == me
     @test t.host == "github.com"
     @test isempty(t.license)
     @test t.authors == LibGit2.getconfig("user.name", "")
     @test t.years == string(Dates.year(Dates.today()))
-    @test t.dir == Pkg.dir()
+    @test t.dir == default_dir
     @test t.julia_version == VERSION
     @test isempty(t.requirements)
     @test isempty(t.gitconfig)
     @test isempty(t.plugins)
 
     if isempty(LibGit2.getconfig("github.user", ""))
-        write(STDIN.buffer, "\n")
+        write(stdin.buffer, "\n")
         @test_throws ArgumentError t = interactive_template()
     end
 
-    write(STDIN.buffer, "$me\ngitlab.com\n$('\x1b')[B\r$me\n2016\n$test_file\nno\n0.5\nX Y\nkey val val\nkey2 val2\n\n$('\x1b')[B\r$('\x1b')[B\rd\n\n")
+    write(stdin.buffer, "$me\ngitlab.com\n$('\x1b')[B\r$me\n2016\n$test_file\nno\n0.5\nX Y\nkey val val\nkey2 val2\n\n$('\x1b')[B\r$('\x1b')[B\rd\n\n")
     t = interactive_template()
     @test t.user == me
     @test t.host == "gitlab.com"
@@ -41,10 +41,10 @@
     # Like above, not sure which plugins this will generate.
     @test length(t.plugins) == 2
 
-    write(STDIN.buffer, "$me\n\n\r\n\n\n\nA B\n A B\n\nd")
-    @test_warn r".+" interactive_template()
+    write(stdin.buffer, "$me\n\n\r\n\n\n\nA B\nA B\n\nd")
+    @test_logs (:warn, r".+") match_mode=:any interactive_template()
 
-    write(STDIN.buffer, "$me\nd")
+    write(stdin.buffer, "$me\nd")
     t = interactive_template(; fast=true)
     @test t.user == me
     @test t.host == "github.com"
@@ -52,7 +52,7 @@
     @test t.authors == LibGit2.getconfig("user.name", "")
     # I guess this could technically break if it runs on New Year's Eve...
     @test t.years == string(Dates.year(Dates.today()))
-    @test t.dir == Pkg.dir()
+    @test t.dir == default_dir
     @test t.julia_version == VERSION
     @test isempty(t.requirements)
     @test isempty(t.gitconfig)
@@ -62,8 +62,8 @@ end
 
 @testset "Interactive package generation" begin
     cfg = join(("$k $v" for (k, v) in gitconfig), "\n")
-    write(STDIN.buffer, "$me\n\n\r\n\n\n\n$cfg\n\nd")
+    write(stdin.buffer, "$me\n\n\r\n\n\n\n$cfg\n\nd")
     generate_interactive(test_pkg)
-    @test isdir(Pkg.dir(test_pkg))
-    rm(Pkg.dir(test_pkg); force=true, recursive=true)
+    @test isdir(joinpath(default_dir, test_pkg))
+    rm(joinpath(default_dir, test_pkg); force=true, recursive=true)
 end
diff --git a/test/interactive/plugins.jl b/test/interactive/plugins.jl
index ddf3efa..36cf86c 100644
--- a/test/interactive/plugins.jl
+++ b/test/interactive/plugins.jl
@@ -1,90 +1,90 @@
 # These tests are to be skipped in OSX builds, see ./interactive.jl for more info.
 
 @testset "TravisCI" begin
-    write(STDIN.buffer, "\n")
+    write(stdin.buffer, "\n")
     p = interactive(TravisCI)
-    @test get(p.src, "") == joinpath(DEFAULTS_DIR, "travis.yml")
-    write(STDIN.buffer, "$test_file\n")
+    @test p.src == joinpath(DEFAULTS_DIR, "travis.yml")
+    write(stdin.buffer, "$test_file\n")
     p = interactive(TravisCI)
-    @test get(p.src, "") == test_file
-    write(STDIN.buffer, "none\n")
+    @test p.src == test_file
+    write(stdin.buffer, "none\n")
     p = interactive(TravisCI)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$fake_path\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$fake_path\n")
     @test_throws ArgumentError interactive(TravisCI)
     println()
 end
 
 @testset "AppVeyor" begin
-    write(STDIN.buffer, "\n")
+    write(stdin.buffer, "\n")
     p = interactive(AppVeyor)
-    @test get(p.src, "") == joinpath(DEFAULTS_DIR, "appveyor.yml")
-    write(STDIN.buffer, "$test_file\n")
+    @test p.src == joinpath(DEFAULTS_DIR, "appveyor.yml")
+    write(stdin.buffer, "$test_file\n")
     p = interactive(AppVeyor)
-    @test get(p.src, "") == test_file
-    write(STDIN.buffer, "none\n")
+    @test p.src == test_file
+    write(stdin.buffer, "none\n")
     p = interactive(AppVeyor)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$fake_path\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$fake_path\n")
     @test_throws ArgumentError interactive(AppVeyor)
     println()
 end
 
 @testset "GitLabCI" begin
-    write(STDIN.buffer, "\n\n")
+    write(stdin.buffer, "\n\n")
     p = interactive(GitLabCI)
-    @test get(p.src, "") == joinpath(DEFAULTS_DIR, "gitlab-ci.yml")
+    @test p.src == joinpath(DEFAULTS_DIR, "gitlab-ci.yml")
     @test p.view == Dict("GITLABCOVERAGE" => true)
-    write(STDIN.buffer, "$test_file\nno\n")
+    write(stdin.buffer, "$test_file\nno\n")
     p = interactive(GitLabCI)
-    @test get(p.src, "") == test_file
+    @test p.src == test_file
     @test p.view == Dict("GITLABCOVERAGE" => false)
-    write(STDIN.buffer, "none\n\n")
+    write(stdin.buffer, "none\n\n")
     p = interactive(GitLabCI)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$fake_path\n\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$fake_path\n\n")
     @test_throws ArgumentError interactive(GitLabCI)
     println()
 end
 
 @testset "CodeCov" begin
-    write(STDIN.buffer, "\n")
+    write(stdin.buffer, "\n")
     p = interactive(CodeCov)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$test_file\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$test_file\n")
     p = interactive(CodeCov)
-    @test get(p.src, "") == test_file
-    write(STDIN.buffer, "none\n")
+    @test p.src == test_file
+    write(stdin.buffer, "none\n")
     p = interactive(CodeCov)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$fake_path\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$fake_path\n")
     @test_throws ArgumentError interactive(CodeCov)
     println()
 end
 
 @testset "Coveralls" begin
-    write(STDIN.buffer, "\n")
+    write(stdin.buffer, "\n")
     p = interactive(Coveralls)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$test_file\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$test_file\n")
     p = interactive(Coveralls)
-    @test get(p.src, "") == test_file
-    write(STDIN.buffer, "none\n")
+    @test p.src == test_file
+    write(stdin.buffer, "none\n")
     p = interactive(Coveralls)
-    @test isnull(p.src)
-    write(STDIN.buffer, "$fake_path\n")
+    @test p.src === nothing
+    write(stdin.buffer, "$fake_path\n")
     @test_throws ArgumentError interactive(Coveralls)
     println()
 end
 
 @testset "GitHubPages" begin
-    write(STDIN.buffer, "\n")
+    write(stdin.buffer, "\n")
     p = interactive(GitHubPages)
     @test isempty(p.assets)
-    write(STDIN.buffer, "$test_file\n")
+    write(stdin.buffer, "$test_file\n")
     p = interactive(GitHubPages)
     @test p.assets == [test_file]
-    write(STDIN.buffer, "$fake_path\n")
+    write(stdin.buffer, "$fake_path\n")
     @test_throws ArgumentError interactive(GitHubPages)
     println()
 end
diff --git a/test/plugins/appveyor.jl b/test/plugins/appveyor.jl
index ef0a9e6..5aa304b 100644
--- a/test/plugins/appveyor.jl
+++ b/test/plugins/appveyor.jl
@@ -7,7 +7,7 @@ pkg_dir = joinpath(temp_dir, test_pkg)
     @testset "Plugin creation" begin
         p = AppVeyor()
         @test isempty(p.gitignore)
-        @test get(p.src, "") == joinpath(PkgTemplates.DEFAULTS_DIR, "appveyor.yml")
+        @test p.src == joinpath(PkgTemplates.DEFAULTS_DIR, "appveyor.yml")
         @test p.dest == ".appveyor.yml"
         @test p.badges == [
             Badge(
@@ -18,9 +18,9 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         ]
         @test isempty(p.view)
         p = AppVeyor(; config_file=nothing)
-        @test isnull(p.src)
+        @test p.src === nothing
         p = AppVeyor(; config_file=test_file)
-        @test get(p.src, "") == test_file
+        @test p.src == test_file
         @test_throws ArgumentError AppVeyor(; config_file=fake_path)
     end
 
@@ -30,33 +30,39 @@ pkg_dir = joinpath(temp_dir, test_pkg)
     end
 
     @testset "File generation" begin
+        # Without a coverage plugin in the template, there should be no post-test step.
         p = AppVeyor()
         @test gen_plugin(p, t, temp_dir, test_pkg) == [".appveyor.yml"]
         @test isfile(joinpath(pkg_dir, ".appveyor.yml"))
-        appveyor = readstring(joinpath(pkg_dir, ".appveyor.yml"))
-        @test !contains(appveyor, "coverage=true")
-        @test !contains(appveyor, "after_test")
-        @test !contains(appveyor, "Codecov.submit")
-        @test !contains(appveyor, "Coveralls.submit")
+        appveyor = read(joinpath(pkg_dir, ".appveyor.yml"), String)
+        @test !occursin("coverage=true", appveyor)
+        @test !occursin("after_test", appveyor)
+        @test !occursin("Codecov.submit", appveyor)
+        @test !occursin("Coveralls.submit", appveyor)
         rm(joinpath(pkg_dir, ".appveyor.yml"))
+
+        # Generating the plugin with CodeCov in the template should create a post-test step.
         t.plugins[CodeCov] = CodeCov()
         gen_plugin(p, t, temp_dir, test_pkg)
         delete!(t.plugins, CodeCov)
-        appveyor = readstring(joinpath(pkg_dir, ".appveyor.yml"))
-        @test contains(appveyor, "coverage=true")
-        @test contains(appveyor, "after_test")
-        @test contains(appveyor, "Codecov.submit")
-        @test !contains(appveyor, "Coveralls.submit")
+        appveyor = read(joinpath(pkg_dir, ".appveyor.yml"), String)
+        @test occursin("coverage=true", appveyor)
+        @test occursin("after_test", appveyor)
+        @test occursin("Codecov.submit", appveyor)
+        @test !occursin("Coveralls.submit", appveyor)
         rm(joinpath(pkg_dir, ".appveyor.yml"))
+
+        # Coveralls should do the same.
         t.plugins[Coveralls] = Coveralls()
         gen_plugin(p, t, temp_dir, test_pkg)
         delete!(t.plugins, Coveralls)
-        appveyor = readstring(joinpath(pkg_dir, ".appveyor.yml"))
-        @test contains(appveyor, "coverage=true")
-        @test contains(appveyor, "after_test")
-        @test contains(appveyor, "Coveralls.submit")
-        @test !contains(appveyor, "Codecov.submit")
+        appveyor = read(joinpath(pkg_dir, ".appveyor.yml"), String)
+        @test occursin("coverage=true", appveyor)
+        @test occursin("after_test", appveyor)
+        @test occursin("Coveralls.submit", appveyor)
+        @test !occursin("Codecov.submit", appveyor)
         rm(joinpath(pkg_dir, ".appveyor.yml"))
+
         p = AppVeyor(; config_file=nothing)
         @test isempty(gen_plugin(p, t, temp_dir, test_pkg))
         @test !isfile(joinpath(pkg_dir, ".appveyor.yml"))
diff --git a/test/plugins/codecov.jl b/test/plugins/codecov.jl
index e4db4bf..e410363 100644
--- a/test/plugins/codecov.jl
+++ b/test/plugins/codecov.jl
@@ -7,7 +7,7 @@ pkg_dir = joinpath(temp_dir, test_pkg)
     @testset "Plugin creation" begin
         p = CodeCov()
         @test p.gitignore == ["*.jl.cov", "*.jl.*.cov", "*.jl.mem"]
-        @test isnull(p.src)
+        @test p.src === nothing
         @test p.dest == ".codecov.yml"
         @test p.badges == [
             Badge(
@@ -18,9 +18,9 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         ]
         @test isempty(p.view)
         p = CodeCov(; config_file=nothing)
-        @test isnull(p.src)
+        @test p.src === nothing
         p = CodeCov(; config_file=test_file)
-        @test get(p.src, "") == test_file
+        @test p.src == test_file
         @test_throws ArgumentError CodeCov(; config_file=fake_path)
     end
 
diff --git a/test/plugins/coveralls.jl b/test/plugins/coveralls.jl
index fabce93..3b257c2 100644
--- a/test/plugins/coveralls.jl
+++ b/test/plugins/coveralls.jl
@@ -7,7 +7,7 @@ pkg_dir = joinpath(temp_dir, test_pkg)
     @testset "Plugin creation" begin
         p = Coveralls()
         @test p.gitignore == ["*.jl.cov", "*.jl.*.cov", "*.jl.mem"]
-        @test isnull(p.src)
+        @test p.src === nothing
         @test p.dest == ".coveralls.yml"
         @test p.badges == [
             Badge(
@@ -18,9 +18,9 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         ]
         @test isempty(p.view)
         p = Coveralls(; config_file=nothing)
-        @test isnull(p.src)
+        @test p.src === nothing
         p = Coveralls(; config_file=test_file)
-        @test get(p.src, "") == test_file
+        @test p.src == test_file
         @test_throws ArgumentError Coveralls(; config_file=fake_path)
     end
 
diff --git a/test/plugins/githubpages.jl b/test/plugins/githubpages.jl
index 226ca2d..7c45151 100644
--- a/test/plugins/githubpages.jl
+++ b/test/plugins/githubpages.jl
@@ -27,8 +27,8 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         @test isdir(joinpath(pkg_dir, "docs"))
         @test isfile(joinpath(pkg_dir, "docs", "make.jl"))
         make = readchomp(joinpath(pkg_dir, "docs", "make.jl"))
-        @test contains(make, "assets=[]")
-        @test !contains(make, "deploydocs")
+        @test occursin("assets=[]", make)
+        @test !occursin("deploydocs", make)
         @test isdir(joinpath(pkg_dir, "docs", "src"))
         @test isfile(joinpath(pkg_dir, "docs", "src", "index.md"))
         index = readchomp(joinpath(pkg_dir, "docs", "src", "index.md"))
@@ -37,20 +37,21 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         p = GitHubPages(; assets=[test_file])
         @test gen_plugin(p, t, temp_dir, test_pkg) == ["docs/"]
         make = readchomp(joinpath(pkg_dir, "docs", "make.jl"))
-        @test contains(
-            make,
+        # Check the formatting of the assets list.
+        @test occursin(
             strip("""
             assets=[
                     "assets/$(basename(test_file))",
                 ]
             """),
+            make,
         )
         @test isfile(joinpath(pkg_dir, "docs", "src", "assets", basename(test_file)))
         rm(joinpath(pkg_dir, "docs"); recursive=true)
         t.plugins[TravisCI] = TravisCI()
         @test gen_plugin(p, t, temp_dir, test_pkg) == ["docs/"]
         make = readchomp(joinpath(pkg_dir, "docs", "make.jl"))
-        @test contains(make, "deploydocs")
+        @test occursin("deploydocs", make)
         rm(joinpath(pkg_dir, "docs"); recursive=true)
     end
 end
diff --git a/test/plugins/gitlabci.jl b/test/plugins/gitlabci.jl
index 732ac62..c3523c2 100644
--- a/test/plugins/gitlabci.jl
+++ b/test/plugins/gitlabci.jl
@@ -7,7 +7,7 @@ pkg_dir = joinpath(temp_dir, test_pkg)
     @testset "Plugin creation" begin
         p = GitLabCI()
         @test p.gitignore == ["*.jl.cov", "*.jl.*.cov", "*.jl.mem"]
-        @test get(p.src, "") == joinpath(PkgTemplates.DEFAULTS_DIR, "gitlab-ci.yml")
+        @test p.src == joinpath(PkgTemplates.DEFAULTS_DIR, "gitlab-ci.yml")
         @test p.dest == ".gitlab-ci.yml"
         @test p.badges == [
 			Badge(
@@ -23,9 +23,9 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         ]
         @test p.view == Dict("GITLABCOVERAGE" => true)
         p = GitLabCI(; config_file=nothing)
-        @test isnull(p.src)
+        @test p.src === nothing
         p = GitLabCI(; config_file=test_file)
-        @test get(p.src, "") == test_file
+        @test p.src == test_file
         @test_throws ArgumentError GitLabCI(; config_file=fake_path)
 		p = GitLabCI(; coverage=false)
 		@test p.badges == [
@@ -50,16 +50,20 @@ pkg_dir = joinpath(temp_dir, test_pkg)
         p = GitLabCI()
         @test gen_plugin(p, t, temp_dir, test_pkg) == [".gitlab-ci.yml"]
         @test isfile(joinpath(pkg_dir, ".gitlab-ci.yml"))
-        gitlab = readstring(joinpath(pkg_dir, ".gitlab-ci.yml"))
-        @test contains(gitlab, "test_template")
-        @test contains(gitlab, "using Coverage")
+        gitlab = read(joinpath(pkg_dir, ".gitlab-ci.yml"), String)
+        @test occursin("test_template", gitlab)
+        # The default plugin should enable the coverage step.
+        @test occursin("using Coverage", gitlab)
         rm(joinpath(pkg_dir, ".gitlab-ci.yml"))
+
         p = GitLabCI(; coverage=false)
         gen_plugin(p, t, temp_dir, test_pkg)
-        gitlab = readstring(joinpath(pkg_dir, ".gitlab-ci.yml"))
-        @test !contains(gitlab, "using Coverage")
+        gitlab = read(joinpath(pkg_dir, ".gitlab-ci.yml"), String)
+        # If coverage is false, there should be no coverage step.
+        @test !occursin("using Coverage", gitlab)
         rm(joinpath(pkg_dir, ".gitlab-ci.yml"))
         p = GitLabCI(; config_file=nothing)
+
         @test isempty(gen_plugin(p, t, temp_dir, test_pkg))
         @test !isfile(joinpath(pkg_dir, ".gitlab-ci.yml"))
     end
diff --git a/test/plugins/travisci.jl b/test/plugins/travisci.jl
index 4b2409e..db0056f 100644
--- a/test/plugins/travisci.jl
+++ b/test/plugins/travisci.jl
@@ -7,65 +7,74 @@ pkg_dir = joinpath(temp_dir, test_pkg)
     @testset "Plugin creation" begin
         p = TravisCI()
         @test isempty(p.gitignore)
-        @test get(p.src, "") == joinpath(PkgTemplates.DEFAULTS_DIR, "travis.yml")
+        @test p.src == joinpath(PkgTemplates.DEFAULTS_DIR, "travis.yml")
         @test p.dest == ".travis.yml"
         @test p.badges == [
             Badge(
                 "Build Status",
-                "https://travis-ci.org/{{USER}}/{{PKGNAME}}.jl.svg?branch=master",
-                "https://travis-ci.org/{{USER}}/{{PKGNAME}}.jl",
+                "https://travis-ci.com/{{USER}}/{{PKGNAME}}.jl.svg?branch=master",
+                "https://travis-ci.com/{{USER}}/{{PKGNAME}}.jl",
             ),
         ]
         @test isempty(p.view)
         p = TravisCI(; config_file=nothing)
-        @test isnull(p.src)
+        @test p.src === nothing
         p = TravisCI(; config_file=test_file)
-        @test get(p.src, "") == test_file
+        @test p.src == test_file
         @test_throws ArgumentError TravisCI(; config_file=fake_path)
     end
 
     @testset "Badge generation" begin
         p = TravisCI()
-        @test badges(p, user, test_pkg) == ["[![Build Status](https://travis-ci.org/$user/$test_pkg.jl.svg?branch=master)](https://travis-ci.org/$user/$test_pkg.jl)"]
+        @test badges(p, user, test_pkg) == ["[![Build Status](https://travis-ci.com/$user/$test_pkg.jl.svg?branch=master)](https://travis-ci.com/$user/$test_pkg.jl)"]
     end
 
     @testset "File generation" begin
+        # Without a coverage plugin in the template, there should be no post-test step.
         p = TravisCI()
         @test gen_plugin(p, t, temp_dir, test_pkg) == [".travis.yml"]
         @test isfile(joinpath(pkg_dir, ".travis.yml"))
-        travis = readstring(joinpath(pkg_dir, ".travis.yml"))
-        @test !contains(travis, "after_success")
-        @test !contains(travis, "Codecov.submit")
-        @test !contains(travis, "Coveralls.submit")
-        @test !contains(travis, "Pkg.add(\"Documenter\")")
+        travis = read(joinpath(pkg_dir, ".travis.yml"), String)
+
+        @test !occursin("after_success", travis)
+        @test !occursin("Codecov.submit", travis)
+        @test !occursin("Coveralls.submit", travis)
+        @test !occursin("Pkg.add(\"Documenter\")", travis)
         rm(joinpath(pkg_dir, ".travis.yml"))
+
+        # Generating the plugin with CodeCov in the template should create a post-test step.
         t.plugins[CodeCov] = CodeCov()
         gen_plugin(p, t, temp_dir, test_pkg)
         delete!(t.plugins, CodeCov)
-        travis = readstring(joinpath(pkg_dir, ".travis.yml"))
-        @test contains(travis, "after_success")
-        @test contains(travis, "Codecov.submit")
-        @test !contains(travis, "Coveralls.submit")
-        @test !contains(travis, "Pkg.add(\"Documenter\")")
+        travis = read(joinpath(pkg_dir, ".travis.yml"), String)
+        @test occursin("after_success", travis)
+        @test occursin("Codecov.submit", travis)
+        @test !occursin("Coveralls.submit", travis)
+        @test !occursin("Pkg.add(\"Documenter\")", travis)
         rm(joinpath(pkg_dir, ".travis.yml"))
+
+        # Coveralls should do the same.
         t.plugins[Coveralls] = Coveralls()
         gen_plugin(p, t, temp_dir, test_pkg)
         delete!(t.plugins, Coveralls)
-        travis = readstring(joinpath(pkg_dir, ".travis.yml"))
-        @test contains(travis, "after_success")
-        @test contains(travis, "Coveralls.submit")
-        @test !contains(travis, "Codecov.submit")
-        @test !contains(travis, "Pkg.add(\"Documenter\")")
+        travis = read(joinpath(pkg_dir, ".travis.yml"), String)
+        @test occursin("after_success", travis)
+        @test occursin("Coveralls.submit", travis)
+        @test !occursin("Codecov.submit", travis)
+        @test !occursin("Pkg.add(\"Documenter\")", travis)
         rm(joinpath(pkg_dir, ".travis.yml"))
+
+        # With a Documenter plugin, there should be a docs deployment step.
         t.plugins[GitHubPages] = GitHubPages()
         gen_plugin(p, t, temp_dir, test_pkg)
         delete!(t.plugins, GitHubPages)
-        travis = readstring(joinpath(pkg_dir, ".travis.yml"))
-        @test contains(travis, "after_success")
-        @test contains(travis, "Pkg.add(\"Documenter\")")
-        @test !contains(travis, "Codecov.submit")
-        @test !contains(travis, "Coveralls.submit")
+        travis = read(joinpath(pkg_dir, ".travis.yml"), String)
+        @test occursin("after_success", travis)
+        @test occursin("Pkg.add(\"Documenter\")", travis)
+        @test !occursin("Codecov.submit", travis)
+        @test !occursin("Coveralls.submit", travis)
         rm(joinpath(pkg_dir, ".travis.yml"))
+
         p = TravisCI(; config_file=nothing)
         @test isempty(gen_plugin(p, t, temp_dir, test_pkg))
         @test !isfile(joinpath(pkg_dir, ".travis.yml"))
diff --git a/test/runtests.jl b/test/runtests.jl
index c4fbac2..0bc2150 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,5 +1,7 @@
 using PkgTemplates
-using Base.Test
+using Test
+using Dates
+using LibGit2
 
 import PkgTemplates: badges, version_floor, substitute, read_license, gen_file, gen_readme,
     gen_tests, gen_license, gen_require, gen_entrypoint, gen_gitignore, gen_plugin,
@@ -7,17 +9,11 @@ import PkgTemplates: badges, version_floor, substitute, read_license, gen_file,
     format, interactive, DEFAULTS_DIR
 
 mktempdir() do temp_dir
-    withenv("JULIA_PKGDIR" => temp_dir) do
-        # We technically don't need to clone METADATA to run tests.
-        if get(ENV, "PKGTEMPLATES_TEST_FAST", "false") == "true"
-            mkdir(joinpath(temp_dir, "v$(version_floor())"))
-        else
-            Pkg.init()
-        end
-        cd(temp_dir) do
-            @testset "PkgTemplates.jl" begin
-                include("tests.jl")
-            end
+    mkdir(joinpath(temp_dir, "dev"))
+    pushfirst!(DEPOT_PATH, temp_dir)
+    cd(temp_dir) do
+        @testset "PkgTemplates.jl" begin
+            include("tests.jl")
         end
     end
 end
diff --git a/test/tests.jl b/test/tests.jl
index 9f7c176..427ac1a 100644
--- a/test/tests.jl
+++ b/test/tests.jl
@@ -1,6 +1,7 @@
+# A dummy GenericPlugin subtype.
 struct Foo <: GenericPlugin
     gitignore::Vector{AbstractString}
-    src::Nullable{AbstractString}
+    src::Union{AbstractString, Nothing}
     dest::AbstractString
     badges::Vector{Badge}
     view::Dict{String, Any}
@@ -8,9 +9,12 @@ struct Foo <: GenericPlugin
         new([], @__FILE__, config_file, [Badge("foo", "bar", "baz")], Dict{String, Any}())
     end
 end
+# A dummy CustomPlugin subtype.
 struct Bar <: CustomPlugin end
+# A dummy Plugin subtype.
 struct Baz <: Plugin end
 
+# Various options to be passed into templates.
 const me = "christopher-dG"
 const gitconfig = Dict(
     "user.name" => "Tester McTestFace",
@@ -18,8 +22,9 @@ const gitconfig = Dict(
     "github.user" => "TesterMcTestFace",
 )
 const test_pkg = "TestPkg"
-const fake_path = bin(hash("/this/file/does/not/exist"))
+const fake_path = string(hash("/this/file/does/not/exist"); base=2)
 const test_file = tempname()
+const default_dir = PkgTemplates.dev_dir()
 const template_text = """
             PKGNAME: {{PKGNAME}}
             VERSION: {{VERSION}}}
@@ -32,16 +37,19 @@ const template_text = """
 write(test_file, template_text)
 
 @testset "Template creation" begin
+    # Checking default field assignments.
     t = Template(; user=me)
     @test t.user == me
     @test t.license == "MIT"
     @test t.years == string(Dates.year(Dates.today()))
     @test t.authors == LibGit2.getconfig("user.name", "")
-    @test t.dir == Pkg.dir()
+    @test t.dir == default_dir
     @test t.julia_version == VERSION
     @test isempty(t.gitconfig)
     @test isempty(t.plugins)
 
+    # Checking non-default field assignments.
+
     t = Template(; user=me, license="")
     @test t.license == ""
 
@@ -56,12 +64,14 @@ write(test_file, template_text)
     t = Template(; user=me, authors="Some Guy")
     @test t.authors == "Some Guy"
 
+    # Vectors of authors should be comma-joined.
     t = Template(; user=me, authors=["Guy", "Gal"])
     @test t.authors == "Guy, Gal"
 
     t = Template(; user=me, dir=test_file)
     @test t.dir == abspath(test_file)
-    if is_unix()  # ~ means temporary file on Windows, not $HOME.
+    if Sys.isunix()  # ~ means temporary file on Windows, not $HOME.
+        # '~' should be replaced by home dir.
         t = Template(; user=me, dir="~/$(basename(test_file))")
         @test t.dir == joinpath(homedir(), basename(test_file))
     end
@@ -74,8 +84,10 @@ write(test_file, template_text)
 
     t = Template(; user=me, requirements=["$test_pkg 0.1"])
     @test t.requirements == ["$test_pkg 0.1"]
-    @test_warn r".+" t = Template(; user=me, requirements=[test_pkg, test_pkg])
+    # Duplicate requirements should warn.
+    @test_logs (:warn, r".+") t = Template(; user=me, requirements=[test_pkg, test_pkg])
     @test t.requirements == [test_pkg]
+    # Duplicate requirements with non-matching versions should throw.
     @test_throws ArgumentError Template(;
         user=me,
         requirements=[test_pkg, "$test_pkg 0.1"]
@@ -84,6 +96,9 @@ write(test_file, template_text)
     t = Template(; user=me, gitconfig=gitconfig)
     @test t.gitconfig == gitconfig
 
+    # Git options should be used as fallbacks for template user and authors.
+    # But an explicitly passed username trumps the gitconfig.
+
     t = Template(; user=me, gitconfig=gitconfig)
     @test t.authors == gitconfig["user.name"]
 
@@ -91,6 +106,7 @@ write(test_file, template_text)
     @test t.user == gitconfig["github.user"]
     @test t.authors == gitconfig["user.name"]
 
+    # The template should contain whatever plugins you give it.
     t = Template(;
         user=me,
         plugins = [GitHubPages(), TravisCI(), AppVeyor(), CodeCov(), Coveralls()],
@@ -102,11 +118,13 @@ write(test_file, template_text)
         [GitHubPages(), TravisCI(), AppVeyor(), CodeCov(), Coveralls()]
     )
 
-    @test_warn r".+" t = Template(;
+    # Duplicate plugins should warn.
+    @test_logs (:warn, r".+") t = Template(;
         user=me,
         plugins=[TravisCI(), TravisCI()],
     )
 
+    # If github.user is configured, use that as a default.
     if isempty(LibGit2.getconfig("github.user", ""))
         @test_throws ArgumentError Template()
     else
@@ -116,17 +134,18 @@ write(test_file, template_text)
     @test_throws ArgumentError Template(; user=me, license="FakeLicense")
 end
 
+# TerminalMenus doesn't work quite right on Travis OSX.
 if get(ENV, "TRAVIS_OS_NAME", "") != "osx"
     include(joinpath("interactive", "interactive.jl"))
     @testset "Interactive plugin creation" begin
         include(joinpath("interactive", "plugins.jl"))
     end
 else
-    info("Skipping tests that require TerminalMenus")
+    @info "Skipping tests that require TerminalMenus on OSX"
 end
 
 @testset "Show methods" begin
-    pkgdir = replace(joinpath(ENV["JULIA_PKGDIR"], "v$(version_floor())"), homedir(), "~")
+    pkg_dir = replace(default_dir, homedir() => "~")
     buf = IOBuffer()
     t = Template(; user=me, gitconfig=gitconfig)
     show(buf, t)
@@ -136,7 +155,7 @@ end
           → User: $me
           → Host: github.com
           → License: MIT ($(gitconfig["user.name"]) $(Dates.year(now())))
-          → Package directory: $pkgdir
+          → Package directory: $pkg_dir
           → Precompilation enabled: Yes
           → Minimum Julia version: v$(PkgTemplates.version_floor())
           → 0 package requirements
@@ -165,7 +184,7 @@ end
           → User: $me
           → Host: github.com
           → License: None
-          → Package directory: $pkgdir
+          → Package directory: $pkg_dir
           → Precompilation enabled: Yes
           → Minimum Julia version: v$(PkgTemplates.version_floor())
           → 2 package requirements: Bar, Foo
@@ -201,76 +220,85 @@ end
     temp_file = tempname()
     gen_file(temp_file, "Hello, world")
     @test isfile(temp_file)
-    @test readstring(temp_file) == "Hello, world\n"
+    @test read(temp_file, String) == "Hello, world\n"
     rm(temp_file)
 
+    # Test the README generation.
     @test gen_readme(temp_dir, test_pkg, t) == ["README.md"]
     @test isfile(joinpath(pkg_dir, "README.md"))
     readme = readchomp(joinpath(pkg_dir, "README.md"))
     rm(joinpath(pkg_dir, "README.md"))
-    @test contains(readme, "# $test_pkg")
+    @test occursin("# $test_pkg", readme)
     for p in values(t.plugins)
-        @test contains(readme, join(badges(p, t.user, test_pkg), "\n"))
+        @test occursin(join(badges(p, t.user, test_pkg), "\n"), readme)
     end
     # Check the order of the badges.
-    @test search(readme, "github.io").start <
-        search(readme, "travis").start <
-        search(readme, "appveyor").start <
-        search(readme, "codecov").start <
-        search(readme, "coveralls").start
+    @test something(findfirst("github.io", readme)).start <
+        something(findfirst("travis", readme)).start <
+        something(findfirst("appveyor", readme)).start <
+        something(findfirst("codecov", readme)).start <
+        something(findfirst("coveralls", readme)).start
     # Plugins with badges but not in BADGE_ORDER should appear at the far right side.
     t.plugins[Foo] = Foo()
     gen_readme(temp_dir, test_pkg, t)
     readme = readchomp(joinpath(pkg_dir, "README.md"))
     rm(joinpath(pkg_dir, "README.md"))
-    @test search(readme, "coveralls").start < search(readme, "baz").start
+    @test <(
+        something(findfirst("coveralls", readme)).start,
+        something(findfirst("baz", readme)).start,
+    )
 
+    # Test the gitignore generation.
     @test gen_gitignore(temp_dir, test_pkg, t) == [".gitignore"]
     @test isfile(joinpath(pkg_dir, ".gitignore"))
-    gitignore = readstring(joinpath(pkg_dir, ".gitignore"))
+    gitignore = read(joinpath(pkg_dir, ".gitignore"), String)
     rm(joinpath(pkg_dir, ".gitignore"))
-    @test contains(gitignore, ".DS_Store")
+    @test occursin(".DS_Store", gitignore)
     for p in values(t.plugins)
         for entry in p.gitignore
-            @test contains(gitignore, entry)
+            @test occursin(entry, gitignore)
         end
     end
 
+    # Test the license generation.
     @test gen_license(temp_dir, test_pkg, t) == ["LICENSE"]
     @test isfile(joinpath(pkg_dir, "LICENSE"))
     license = readchomp(joinpath(pkg_dir, "LICENSE"))
     rm(joinpath(pkg_dir, "LICENSE"))
-    @test contains(license, t.authors)
-    @test contains(license, t.years)
-    @test contains(license, read_license(t.license))
+    @test occursin(t.authors, license)
+    @test occursin(t.years, license)
+    @test occursin(read_license(t.license), license)
 
+    # Test the source code entrypoint generation.
     @test gen_entrypoint(temp_dir, test_pkg, t) == ["src/"]
     @test isdir(joinpath(pkg_dir, "src"))
     @test isfile(joinpath(pkg_dir, "src", "$test_pkg.jl"))
     entrypoint = readchomp(joinpath(pkg_dir, "src", "$test_pkg.jl"))
     rm(joinpath(pkg_dir, "src"); recursive=true)
-    @test contains(entrypoint, "__precompile__()")
-    @test contains(entrypoint, "module $test_pkg")
+    @test occursin("__precompile__()", entrypoint)
+    @test occursin("module $test_pkg", entrypoint)
     t2 = Template(; user=me, precompile=false)
     gen_entrypoint(temp_dir, test_pkg, t2)
     entrypoint = readchomp(joinpath(pkg_dir, "src", "$test_pkg.jl"))
-    @test !contains(entrypoint, "__precompile__()")
-    @test contains(entrypoint, "module $test_pkg")
+    @test !occursin("__precompile__()", entrypoint)
+    @test occursin("module $test_pkg", entrypoint)
     rm(joinpath(pkg_dir, "src"); recursive=true)
 
+    # Test the REQUIRE generation.
     @test gen_require(temp_dir, test_pkg, t) == ["REQUIRE"]
     @test isfile(joinpath(pkg_dir, "REQUIRE"))
     vf = version_floor(t.julia_version)
     @test readchomp(joinpath(pkg_dir, "REQUIRE")) == "julia $vf\n$test_pkg"
     rm(joinpath(pkg_dir, "REQUIRE"))
 
+    # Test the test generation.
     @test gen_tests(temp_dir, test_pkg, t) == ["test/"]
     @test isdir(joinpath(pkg_dir, "test"))
     @test isfile(joinpath(pkg_dir, "test", "runtests.jl"))
     runtests = readchomp(joinpath(pkg_dir, "test", "runtests.jl"))
     rm(joinpath(pkg_dir, "test"); recursive=true)
-    @test contains(runtests, "using $test_pkg")
-    @test contains(runtests, "using Base.Test")
+    @test occursin("using $test_pkg", runtests)
+    @test occursin("using Base.Test", runtests)
 
     rm(temp_dir; recursive=true)
 end
@@ -278,45 +306,54 @@ end
 @testset "Package generation" begin
     t = Template(; user=me, gitconfig=gitconfig)
     generate(test_pkg, t)
-    @test isfile(Pkg.dir(test_pkg, "LICENSE"))
-    @test isfile(Pkg.dir(test_pkg, "README.md"))
-    @test isfile(Pkg.dir(test_pkg, "REQUIRE"))
-    @test isfile(Pkg.dir(test_pkg, ".gitignore"))
-    @test isdir(Pkg.dir(test_pkg, "src"))
-    @test isfile(Pkg.dir(test_pkg, "src", "$test_pkg.jl"))
-    @test isdir(Pkg.dir(test_pkg, "test"))
-    @test isfile(Pkg.dir(test_pkg, "test", "runtests.jl"))
-    repo = LibGit2.GitRepo(Pkg.dir(test_pkg))
+    pkg_dir = joinpath(default_dir, test_pkg)
+
+    # Check that the expected files all exist.
+    @test isfile(joinpath(pkg_dir, "LICENSE"))
+    @test isfile(joinpath(pkg_dir, "README.md"))
+    @test isfile(joinpath(pkg_dir, "REQUIRE"))
+    @test isfile(joinpath(pkg_dir, ".gitignore"))
+    @test isdir(joinpath(pkg_dir, "src"))
+    @test isfile(joinpath(pkg_dir, "src", "$test_pkg.jl"))
+    @test isdir(joinpath(pkg_dir, "test"))
+    @test isfile(joinpath(pkg_dir, "test", "runtests.jl"))
+    # Check the gitconfig.
+    repo = LibGit2.GitRepo(pkg_dir)
     remote = LibGit2.get(LibGit2.GitRemote, repo, "origin")
     branches = map(b -> LibGit2.shortname(first(b)), LibGit2.GitBranchIter(repo))
     @test LibGit2.getconfig(repo, "user.name", "") == gitconfig["user.name"]
+    # Check the configured remote and branches.
     # Note: This test will fail on your system if you've configured Git
     # to replace all HTTPS URLs with SSH.
     @test LibGit2.url(remote) == "https://github.com/$me/$test_pkg.jl"
     @test in("master", branches)
     @test !in("gh-pages", branches)
     @test !LibGit2.isdirty(repo)
-    rm(Pkg.dir(test_pkg); recursive=true)
+    rm(pkg_dir; recursive=true)
 
+    # Check that the remote is an SSH URL.
     generate(t, test_pkg; ssh=true)  # Test the reversed-arguments method.
-    repo = LibGit2.GitRepo(Pkg.dir(test_pkg))
+    repo = LibGit2.GitRepo(pkg_dir)
     remote = LibGit2.get(LibGit2.GitRemote, repo, "origin")
     @test LibGit2.url(remote) == "git@github.com:$me/$test_pkg.jl.git"
-    rm(Pkg.dir(test_pkg); recursive=true)
+    rm(pkg_dir; recursive=true)
 
+    # Check that the remote is set correctly for non-default hosts.
     t = Template(; user=me, host="gitlab.com", gitconfig=gitconfig)
     generate(test_pkg, t)
-    repo = LibGit2.GitRepo(Pkg.dir(test_pkg))
+    repo = LibGit2.GitRepo(pkg_dir)
     remote = LibGit2.get(LibGit2.GitRemote, repo, "origin")
     @test LibGit2.url(remote) == "https://gitlab.com/$me/$test_pkg.jl"
-    rm(Pkg.dir(test_pkg); recursive=true)
+    rm(pkg_dir; recursive=true)
 
+    # Check that the package ends up in the right directory.
     temp_dir = mktempdir()
     t = Template(; user=me, dir=temp_dir, gitconfig=gitconfig)
     generate(test_pkg, t)
     @test isdir(joinpath(temp_dir, test_pkg))
     rm(temp_dir; recursive=true)
 
+    # Check that all the plugin files are generated.
     t = Template(;
         user=me,
         license="",
@@ -324,45 +361,49 @@ end
         plugins=[AppVeyor(), GitHubPages(), Coveralls(), CodeCov(), TravisCI()],
     )
     generate(test_pkg, t)
-    @test isdir(joinpath(Pkg.dir(), test_pkg))
-    @test !isfile(Pkg.dir(test_pkg, "LICENSE"))
-    @test isfile(Pkg.dir(test_pkg, ".travis.yml"))
-    @test isfile(Pkg.dir(test_pkg, ".appveyor.yml"))
-    @test isdir(Pkg.dir(test_pkg, "docs"))
-    @test isfile(Pkg.dir(test_pkg, "docs", "make.jl"))
-    @test isdir(Pkg.dir(test_pkg, "docs", "src"))
-    @test isfile(Pkg.dir(test_pkg, "docs", "src", "index.md"))
-    repo = LibGit2.GitRepo(Pkg.dir(test_pkg))
+    @test isdir(pkg_dir)
+    @test !isfile(joinpath(pkg_dir, "LICENSE"))
+    @test isfile(joinpath(pkg_dir, ".travis.yml"))
+    @test isfile(joinpath(pkg_dir, ".appveyor.yml"))
+    @test isdir(joinpath(pkg_dir, "docs"))
+    @test isfile(joinpath(pkg_dir, "docs", "make.jl"))
+    @test isdir(joinpath(pkg_dir, "docs", "src"))
+    @test isfile(joinpath(pkg_dir, "docs", "src", "index.md"))
+    # Test that the gh-pages exists for GitHubPages.
+    repo = LibGit2.GitRepo(pkg_dir)
     @test LibGit2.getconfig(repo, "user.name", "") == gitconfig["user.name"]
     branches = map(b -> LibGit2.shortname(first(b)), LibGit2.GitBranchIter(repo))
     @test in("gh-pages", branches)
     @test !LibGit2.isdirty(repo)
-    rm(Pkg.dir(test_pkg); recursive=true)
+    rm(pkg_dir; recursive=true)
 
-    mkdir(Pkg.dir(test_pkg))
+    # Check that an existing directory is removed when force is set.
+    mkdir(pkg_dir)
     @test_throws ArgumentError generate(test_pkg, t)
     generate(test_pkg, t; force=true)
-    @test isfile(Pkg.dir(test_pkg, "README.md"))
-    rm(Pkg.dir(test_pkg); recursive=true)
+    @test isfile(joinpath(pkg_dir, "README.md"))
+    rm(pkg_dir; recursive=true)
 
-    temp_file, fd = mktemp()
-    close(fd)
+    # Check that the backup directory mechanism works.
+    temp_file, io = mktemp()
+    close(io)
     temp_dir = mktempdir()
-    t = Template(; user=me, dir=temp_file, gitconfig=gitconfig)
-    @test_warn r".+" generate(test_pkg, t; backup_dir=temp_dir)
+    t = Template(; user=me, dir=temp_file)
+    @test_logs (:warn, r".+") match_mode=:any generate(test_pkg, t; backup_dir=temp_dir)
     rm(temp_dir; recursive=true)
     temp_dir = mktempdir()
-    t = Template(; user=me, dir=joinpath(temp_file, "file"), gitconfig=gitconfig)
-    @test_warn r".+" generate(test_pkg, t; backup_dir=temp_dir)
+    t = Template(; user=me, dir=joinpath(temp_file, "dir"))
+    @test_logs (:warn, r".+") match_mode=:any generate(test_pkg, t; backup_dir=temp_dir)
     rm(temp_dir; recursive=true)
     rm(temp_file)
 
+    # Check that the generated docs root is just the copied README.
     t = Template(; user=me, gitconfig=gitconfig, plugins=[GitHubPages()])
     generate(test_pkg, t)
-    readme = readstring(Pkg.dir(test_pkg, "README.md"))
-    index = readstring(Pkg.dir(test_pkg, "docs", "src", "index.md"))
+    readme = read(joinpath(pkg_dir, "README.md"), String)
+    index = read(joinpath(pkg_dir, "docs", "src", "index.md"), String)
     @test readme == index
-    rm(Pkg.dir(test_pkg); recursive=true)
+    rm(pkg_dir; recursive=true)
 end
 
 @testset "Version floor" begin
@@ -375,72 +416,72 @@ end
 @testset "Mustache substitution" begin
     view = Dict{String, Any}()
     text = substitute(template_text, view)
-    @test !contains(text, "PKGNAME: $test_pkg")
-    @test !contains(text, "Documenter")
-    @test !contains(text, "CodeCov")
-    @test !contains(text, "Coveralls")
-    @test !contains(text, "After")
-    @test !contains(text, "Other")
+    @test !occursin("PKGNAME: $test_pkg", text)
+    @test !occursin("Documenter", text)
+    @test !occursin("CodeCov", text)
+    @test !occursin("Coveralls", text)
+    @test !occursin("After", text)
+    @test !occursin("Other", text)
     view["PKGNAME"] = test_pkg
     view["OTHER"] = true
     text = substitute(template_text, view)
-    @test contains(text, "PKGNAME: $test_pkg")
-    @test contains(text, "Other")
+    @test occursin("PKGNAME: $test_pkg", text)
+    @test occursin("Other", text)
 
     t = Template(; user=me)
     view["OTHER"] = false
 
     text = substitute(template_text, t; view=view)
-    @test contains(text, "PKGNAME: $test_pkg")
-    @test contains(text, "VERSION: $(t.julia_version.major).$(t.julia_version.minor)")
-    @test !contains(text, "Documenter")
-    @test !contains(text, "After")
-    @test !contains(text, "Other")
+    @test occursin("PKGNAME: $test_pkg", text)
+    @test occursin("VERSION: $(t.julia_version.major).$(t.julia_version.minor)", text)
+    @test !occursin("Documenter", text)
+    @test !occursin("After", text)
+    @test !occursin("Other", text)
 
     t.plugins[GitHubPages] = GitHubPages()
     text = substitute(template_text, t; view=view)
-    @test contains(text, "Documenter")
-    @test contains(text, "After")
+    @test occursin("Documenter", text)
+    @test occursin("After", text)
     empty!(t.plugins)
 
     t.plugins[CodeCov] = CodeCov()
     text = substitute(template_text, t; view=view)
-    @test contains(text, "CodeCov")
-    @test contains(text, "After")
+    @test occursin("CodeCov", text)
+    @test occursin("After", text)
     empty!(t.plugins)
 
     t.plugins[Coveralls] = Coveralls()
     text = substitute(template_text, t; view=view)
-    @test contains(text, "Coveralls")
-    @test contains(text, "After")
+    @test occursin("Coveralls", text)
+    @test occursin("After", text)
     empty!(t.plugins)
 
     view["OTHER"] = true
     text = substitute(template_text, t; view=view)
-    @test contains(text, "Other")
+    @test occursin("Other", text)
 end
 
 @testset "License display" begin
-    old_stdout = STDOUT
-    out_read, out_write = redirect_stdout()
-    available_licenses()
-    licenses = String(readavailable(out_read))
-    show_license("MIT")
-    mit = String(readavailable(out_read))
-    close(out_write)
-    close(out_read)
-    redirect_stdout(old_stdout)
+    io = IOBuffer()
+    available_licenses(io)
+    licenses = String(take!(io))
+    show_license(io, "MIT")
+    mit = String(take!(io))
 
+    # Check that all licenses are included in the display.
     for (short, long) in LICENSES
-        @test contains(licenses, "$short: $long")
+        @test occursin("$short: $long", licenses)
     end
     @test strip(mit) == strip(read_license("MIT"))
-    @test strip(read_license("MIT")) == strip(readstring(joinpath(LICENSE_DIR, "MIT")))
+    @test strip(read_license("MIT")) == strip(read(joinpath(LICENSE_DIR, "MIT"), String))
     @test_throws ArgumentError read_license(fake_path)
 
+    # Check that all licenses included with the package are displayed.
     for license in readdir(LICENSE_DIR)
         @test haskey(LICENSES, license)
     end
+    # Check that all licenses displayed are included with the package.
+    @test length(readdir(LICENSE_DIR)) == length(LICENSES)
 end
 
 @testset "Plugins" begin
@@ -449,6 +490,7 @@ end
     temp_dir = mktempdir()
     pkg_dir = joinpath(temp_dir, test_pkg)
 
+    # Check badge constructor and formatting.
     badge = Badge("A", "B", "C")
     @test badge.hover == "A"
     @test badge.image == "B"