Spectrum 2.0.4
General:
- Add support for Swiften 4.0rc2. Swiften 3.x and 2.x are still supported.
- Add support for passwordless libpurple backends (e.g. purple-hangouts).
- Partial support for groupchats with case-sensitive names (e.g. purple-telegram).
- Various small bugfixes, see Git commit descriptions for the full list of changes.