New Features
- add latest release notes to release body ([25](https://github.com/fastai/fastrelease/issues/25))
- add `debug` flag to `fastrelease_changelog` ([24](https://github.com/fastai/fastrelease/issues/24))
Bugs Squashed
- `fastrelease_changelog` `debug` param not optional ([26](https://github.com/fastai/fastrelease/issues/26))