* Add sending of attachments
* Change required arguments and add changelog
- text was still default -> changed to required_one_of text or attachments
- Add version_added
- Add changelog fragment for mattermost attachments
Co-Authored-By: Felix Fontein <felix@fontein.de>
* Fix wrong indentation
* Add trailing comma
Co-authored-by: Felix Fontein <felix@fontein.de>
* Remove default=None
Co-authored-by: Felix Fontein <felix@fontein.de>
* Fix sentence
Co-authored-by: Felix Fontein <felix@fontein.de>
Co-authored-by: Felix Fontein <felix@fontein.de>
