Bump actions/checkout from 4 to 5 (#58)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/FUNDING.yml

@@ -1 +0,0 @@
-ko_fi: kojix2

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: "weekly"

.github/workflows/ci.yml

@@ -7,9 +7,9 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu", "macos"]
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4"]
+        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4", "head"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}

.github/workflows/doc.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ruby

Gemfile

@@ -5,13 +5,6 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in youplot.gemspec
 gemspec
 
-group :development do
-  if RUBY_VERSION >= '3.0'
-    gem 'steep', require: false
-    gem 'typeprof'
-  end
-end
-
 group :test do
   gem 'rake'
   gem 'simplecov'

LICENSE.txt

@@ -1,6 +1,7 @@
 The MIT License (MIT)
 
 Copyright (c) 2020 kojix2
+Copyright (c) 2025 Red Data Tools
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -311,7 +311,7 @@ bundle exec exe/uplot      # Run youplot (Try out the edited code)
 
 ### Acknowledgements
 
-* [sampo grafiikka](https://jypg.net/sampo_grafiikka) - Project logo creation
+* [sampo grafiikka](https://lepo.sampo-grafiikka.com/) - Project logo creation
 * [yutaas](https://github.com/yutaas) - English proofreading
 
 ## License

Steepfile

@@ -1,8 +0,0 @@
-D = Steep::Diagnostic
-
-target :lib do
-  signature "sig"
-  check "lib" # Directory name to check
-
-  configure_code_diagnostics(D::Ruby.silent) # `silent` diagnostics setting
-end

sig/youplot/backends/processing.rbs

@@ -1,7 +0,0 @@
-module YouPlot
-  module Backends
-    module Processing
-      def count_values: ([], ?tally: true, ?reverse: false) -> Array[Array[untyped]]
-    end
-  end
-end