1.4.1

This is a gem housekeeping release. No user-facing changes.

🏠 Housekeeping

• Rename default branch to main (#140) @mattbrictson
• Include link to full diff in generated release notes (#144) @mattbrictson
• Replace Travis with CircleCI and add Ruby 3.0 and 3.1 to CI matrix (#138) @mattbrictson
• Upgrade to modern version of coveralls gem (#143) @mattbrictson
• Update appveyor to use a more modern version of Ruby (2.6) (#142) @mattbrictson
• Fix build failures on Ruby < 2.5 (#141) @mattbrictson
• Simplify release-drafter config (#139) @mattbrictson

Full Changelog: v1.4.0...v1.4.1