Mathieu Pasquet: slixmpp v1.8.6 - Codename ICE 2926
A bit less than a year since the latest version, there has been around
45 commits to include in this new release.
Added initial support for:
- XEP-0264 (Jingle Content Thumbnails)
- XEP-0317 (Hats)
- XEP-0469 (Bookmarks pinning)
- XEP-0490 (Message Display Synchronization)