Modernize gem.

.editorconfig

@@ -3,3 +3,7 @@ root = true
 [*]
 indent_style = tab
 indent_size = 2
+
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2

.github/workflows/coverage.yaml

@@ -21,10 +21,10 @@ jobs:
           - macos
 
         ruby:
-          - "3.1"
+          - "3.3"
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{matrix.ruby}}
@@ -34,7 +34,7 @@ jobs:
       timeout-minutes: 5
       run: bundle exec bake test
 
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v3
       with:
         name: coverage-${{matrix.os}}-${{matrix.ruby}}
         path: .covered.db
@@ -44,10 +44,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: "3.1"
+        ruby-version: "3.3"
         bundler-cache: true
 
     - uses: actions/download-artifact@v3

.github/workflows/documentation.yaml

@@ -5,9 +5,6 @@ on:
     branches:
       - main
 
-    # Allows you to run this workflow manually from the Actions tab:
-    workflow_dispatch:
-
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages:
 permissions:
   contents: read
@@ -28,11 +25,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: "3.1"
+        ruby-version: "3.3"
         bundler-cache: true
 
     - name: Installing packages
@@ -43,7 +40,7 @@ jobs:
       run: bundle exec bake utopia:project:static --force no
 
     - name: Upload documentation artifact
-      uses: actions/upload-pages-artifact@v1
+      uses: actions/upload-pages-artifact@v2
       with:
         path: docs
 
@@ -58,4 +55,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v3

.github/workflows/test-external.yaml

@@ -20,12 +20,13 @@ jobs:
           - macos
 
         ruby:
-          - "2.7"
           - "3.0"
           - "3.1"
+          - "3.2"
+          - "3.3"
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{matrix.ruby}}

.github/workflows/test.yaml

@@ -21,9 +21,10 @@ jobs:
           - macos
 
         ruby:
-          - "2.7"
           - "3.0"
           - "3.1"
+          - "3.2"
+          - "3.3"
 
         experimental: [false]
 
@@ -39,7 +40,7 @@ jobs:
             experimental: true
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{matrix.ruby}}

async-container.gemspec

@@ -17,14 +17,8 @@ Gem::Specification.new do |spec|
 
 	spec.files = Dir.glob(['{lib}/**/*', '*.md'], File::FNM_DOTMATCH, base: __dir__)
 
-	spec.required_ruby_version = ">= 2.5"
+	spec.required_ruby_version = ">= 3.0"
 
 	spec.add_dependency "async"
 	spec.add_dependency "async-io"
-
-	spec.add_development_dependency "bake-test"
-	spec.add_development_dependency "bake-test-external"
-	spec.add_development_dependency "bundler"
-	spec.add_development_dependency "covered"
-	spec.add_development_dependency "sus"
 end

examples/benchmark/scalability.rb

@@ -1,3 +1,7 @@
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2022, by Samuel Williams.
 
 # gem install async-container
 gem "async-container"

examples/controller.rb

@@ -2,8 +2,6 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2019-2022, by Samuel Williams.
-# Copyright, 2019, by Yuji Yaginuma.
 # Copyright, 2022, by Anton Sozontov.
 
 require '../lib/async/container/controller'

examples/http/client.rb

@@ -1,3 +1,7 @@
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2022, by Samuel Williams.
 
 require 'async'
 require 'async/http/endpoint'

examples/http/server.rb

@@ -1,3 +1,7 @@
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2022, by Samuel Williams.
 
 require 'async/container'
 

gems.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2020-2022, by Samuel Williams.
+# Copyright, 2017-2022, by Samuel Williams.
 
 source 'https://rubygems.org'
 
@@ -14,3 +14,11 @@
 
 	gem "utopia-project"
 end
+
+group :test do
+	gem "sus"
+	gem "covered"
+
+	gem "bake-test"
+	gem "bake-test-external"
+end

lib/async/container/group.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2019-2022, by Samuel Williams.
+# Copyright, 2018-2022, by Samuel Williams.
 
 require 'fiber'
 require 'async/clock'

readme.md

@@ -25,3 +25,11 @@ We welcome contributions to this project.
 3.  Commit your changes (`git commit -am 'Add some feature'`).
 4.  Push to the branch (`git push origin my-new-feature`).
 5.  Create new Pull Request.
+
+### Developer Certificate of Origin
+
+This project uses the [Developer Certificate of Origin](https://developercertificate.org/). All contributors to this project must agree to this document to have their contributions accepted.
+
+### Contributor Covenant
+
+This project is governed by the [Contributor Covenant](https://www.contributor-covenant.org/). All contributors and participants agree to abide by its terms.