Merge pull request #57 from maxmind/horgh/ruby-version

Drop Ruby 2.4 support, test on Ruby 3.0

Author: oschwald

.github/workflows/rubocop.yml

@@ -7,6 +7,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 3.0
       - run: bundle install
       - run: bundle exec rake -t rubocop

.github/workflows/test.yml

@@ -9,10 +9,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         version:
           [
-            2.4,
             2.5,
             2.6,
             2.7,
+            3.0,
             jruby,
           ]
         exclude:

.rubocop.yml

@@ -1,7 +1,7 @@
 require: rubocop-performance
 
 AllCops:
-    TargetRubyVersion: 2.4
+    TargetRubyVersion: 2.5
     NewCops: enable
 
 # Metrics are too arbitrary.

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.2.0
+
+* Ruby 2.4 is no longer supported. If you're using Ruby 2.4, please use
+  version 1.1.1 of this gem.
+
 ## 1.1.1 (2020-06-23)
 
 * Fixed the memory reader's inspect method to no longer attempt to modify a

README.md

@@ -36,7 +36,7 @@ For more information see the
 
 ## Requirements
 
-This code requires Ruby version 2.4 or higher.
+This code requires Ruby version 2.5 or higher.
 
 ## Contributing
 

maxmind-db.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
     'homepage_uri' => 'https://github.com/maxmind/MaxMind-DB-Reader-ruby',
     'source_code_uri' => 'https://github.com/maxmind/MaxMind-DB-Reader-ruby',
   }
-  s.required_ruby_version = '>= 2.4.0'
+  s.required_ruby_version = '>= 2.5.0'
 
   s.add_development_dependency 'minitest'
   s.add_development_dependency 'rake'