Features
* add --delete option ([f4aa3ef](https://github.com/mhsp/seppmail-converter/commit/f4aa3ef92cb4e9ac7bda37d2eb9a9fc7a1059eb1))
* add --extract ([6f250ca](https://github.com/mhsp/seppmail-converter/commit/6f250ca1cf007e1cc5b095b113e2e3bae63c8bb4))
* add --overwrite, --quiet flags ([910331f](https://github.com/mhsp/seppmail-converter/commit/910331f84a33943fe502dfb047210354bfcf4cf8))
* add --version ([93f84b7](https://github.com/mhsp/seppmail-converter/commit/93f84b7555cbfc403138387a34e7d6cc2e8f668b))
* **ci:** add semantic release ci configuration ([abed82b](https://github.com/mhsp/seppmail-converter/commit/abed82b9bd4be178c3e7e08b82bc13a916471aa9))
* initialize project ([7510584](https://github.com/mhsp/seppmail-converter/commit/75105845b2b8e67ec3e6c0d774dcdc8699900fd1))
* initialize project ([af12135](https://github.com/mhsp/seppmail-converter/commit/af121358cec2bff262616df21b2ed0675362283a))
Bug Fixes
* command-line interface enhancements ([07c28e9](https://github.com/mhsp/seppmail-converter/commit/07c28e9c36282aea47fc2f736b236f8c2624135a))
* only extract attached attachments ([21df3e2](https://github.com/mhsp/seppmail-converter/commit/21df3e28a2a4c8c14c2d631ace847b6c2144358a))
* raise on unknown email ([15dcc35](https://github.com/mhsp/seppmail-converter/commit/15dcc3530d44507f322b16d161027d24f098959b))
* version command ([0782769](https://github.com/mhsp/seppmail-converter/commit/07827695630513f93ade97a651572d33cf07f8ae))