Add Ruby head version to CI matrix

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ 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: ruby/setup-ruby@v1

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'

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