v6.4.0

What's Changed

• Fix test failures by @nobu in #811
• Follow-up rubygems by @nobu in #810
• Drop support for Ruby 2.4 by @nobu in #812
• Rwrite test-case for rubygems_hook without Gem::TestCase by @hsbt in #815
• Prefer omit to pend by @nobu in #818
• Fix assertions which look very likely unintended by @nobu in #820
• Support ActiveSupport::Concern.included by @aycabta in #819
• Fix chained inclusion ancestors_of by @BuonOmo in #817
• Allow a label in a link to another document text by @nobu in #804
• Document 'ruby:' to show core documentation in ri by @xstnztk in #805
• Sync test fixes from ruby/ruby by @nobu in #823
• CI: use jruby-9.2.19.0 by @olleolleolle in #822
• Use HEAD of kpeg by @aycabta in #827
• Move RDoc::RDoc#load_options to RDoc::RDoc.load_options by @aycabta in #832
• Completely remove minitest by @hsbt in #836
• Try to load WEBrick for testing by @voxik in #833
• Add tests for --template-stylesheets option by @nobu in #829
• Fix smart single quote by @nobu in #831
• Convert upper case copyright and registered marks by @nobu in #837
• Update SourceCodePro font files by @aycabta in #844
• CI: use a combined workflow with a matrix by @olleolleolle in #848
• fix: use the global format default for C file comments by @flavorjones in #847
• feature: add support for :category: on C functions by @flavorjones in #846
• feature: Support linking #== by @flavorjones in #845
• fix: alias to a method with call-seq should render properly if the call-seq does not specify the alias by @flavorjones in #840
• Fix typos in test method names [ci skip] by @nobu in #850
• Resolve class and method of the same name correctly by @aycabta in #853

New Contributors

• @xstnztk made their first contribution in #805
• @flavorjones made their first contribution in #847

Full Changelog: v6.3.2...v6.4.0