v1.4.0

Minor Enhancements

• Require at least commonmarker-0.22 (#44)
• Highlight fenced code-block contents with Rouge (#29)

Bug Fixes

• Refactor away extra abstractions (#53)

Development Fixes

• DRY begin-rescue-end block with a private helper (#28)
• Fix failing CI builds (#33)
• Remove gemspec dependency on Jekyll (#34)
• Test rendering with invalid configuration (#27)
• Refactor to improve readability (#37)
• Set up Continuous Integration via GH Actions (#46)
• Clean up gemspec (#47)
• Add workflow to release gem via GH Actions (#54)

Documentation

• Update README to link to commonmarker (#38)