* Avoid code repetition with exec() and output listeners
* Improve behavior for new branches and when it's running in ACT
* Detect parent commit only if needed
* Fix parent commit detection for initial commit
* Improve logging
* Improve current ref detection
* Fix issue when base is a already fetched tag
* Fix issue when base is a already fetched tag
* Update README
* Document usage with act
* Use `git log` to get changes in latest commit
* Disable other output for `git log`
* get short name from base ref + improve loggig
* update CHANGELOG
