Merge pull request #1508 from mikel/feature/adding-additional-jruby-9.4

Adding explicit JRuby support

.github/workflows/test.yml

@@ -25,10 +25,20 @@ jobs:
            timeout: 5
          - ruby: 3.1
            timeout: 5
+         - ruby: truffleruby
+           timeout: 50
          - ruby: truffleruby-head
            timeout: 50
          - ruby: jruby
            timeout: 5
+         - ruby: jruby-head
+           timeout: 5
+         - ruby: jruby-9.4
+           timeout: 5
+         - ruby: jruby-9.3
+           timeout: 5
+         - ruby: jruby-9.2
+           timeout: 5
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1

CHANGELOG.rdoc

@@ -16,6 +16,7 @@ Code Improvements:
 * Use Rake's default rakelib/ directory @olleolleolle
 * refactor: Use Dir.glob only once in gemspec's "files" directive @olleolleolle
 * Configure RSpec's zero-monkey patching mode @olleolleolle
+* Added support for JRuby 9.4 @mikel
 
 Bug Fixes:
 

README.md

@@ -47,7 +47,20 @@ our documentation, add new features—up to you! Thank you for pitching in.
 
 ## Compatibility
 
-Mail supports Ruby 2.5+, including JRuby and TruffleRuby.
+Mail is tested against:
+
+* Ruby: 2.5
+* Ruby: 2.6
+* Ruby: 2.7
+* Ruby: 3.0
+* Ruby: 3.1
+* JRuby: 9.2
+* JRuby: 9.3
+* JRuby: 9.4
+* JRuby: stable
+* JRuby: head
+* Truffleruby: stable
+* Truffleruby: head
 
 As new versions of Ruby are released, Mail will be compatible with support for the "preview" and all "normal maintenance", "security maintenance" and the two most recent "end of life" versions listed at the [Ruby Maintenance Branches](https://www.ruby-lang.org/en/downloads/branches/) page.  Pull requests to assist in adding support for new preview releases are more than welcome.