0.13.0

• Behavior Change: Revert Commits are now recognized and ignored by default (#99)
• --staged flag: gitlint can now detect meta-data (such as author details, changed files, etc) of staged/pre-commits. Useful when you use gitlint's commit-msg hook or precommit (#105)
• New branch properties on GitCommit and GitContext, useful when writing your own user-defined rules: commit.branches and commit.context.current_branch (#108)
• Python 3.8 support
• Python 3.4 no longer supported. Python 3.4 has reached EOL and an increasing
  of gitlint's dependencies have dropped support which makes it hard to maintain.
• Improved Windows support: better unicode handling. Issues remain but the basic functionality works.
• Bugfixes:
  • Gitlint no longer crashes when acting on empty repositories (this only occurred in specific circumstances).
  • Changed files are now better detected in repos that only have a root commit
• Improved performance and memory (gitlint now caches git properties)
• Improved --debug output
• Improved documentation
• Under-the-hood: dependencies updated, unit and integration test improvements, migrated from TravisCI to Github Actions.