Mkchangelog

Features

- add `mkchangelog bump --show-current-version` which prints only current version name
- add `mkchangelog bump --show-next-versions` which prints only next version name - if available - or nothing
- add `git mkc` alias for `mkchangelog`

Features

- add ignore_revs=a,b,c option to .mkchangelog to skip certain git log entries

Features

- **hooks:** add hooks system to expand mkchangelog features using python code

Fixes

- **templates:** add `| regex_replace("pattern", "replacement")` templates filter

Fixes

- **python:** drop support for *Python 3.7*

Fixes

- **templates:** Add missing new line between items