- update to version 8:
* Mentions are sent intentionally
* Authenticated media are supported
* Draft messages are kept per-room and persisted across restarts
* More links are detected in messages and room descriptions
* Collapsed categories in the sidebar are remembered between restarts
* A banner appears when synchronization with the homeserver fails
too many times in a row
* The verification and account recovery processes have been polished
* HTML rendering has been improved, with the support of new
elements and attributes