• New rules: body-is-missing, body-min-length, title-leading-whitespace,
  body-changed-file-mention. Details can be found in the
  Rules section of the documentation.
• The git commit-msg hook now allows you to keep or discard the commit when it fails gitlint validation
• gitlint is now also released as a python wheel on pypi.
• Internal: rule classes now have access to a gitcontext containing body the commit message and the files changed in the
  last commit.