The biggest change was in how the database saves thread history and bookmarks. There was a bug causing the database to prune the wrong threads. The result was that there were no posts in the database when it needed them. In the course of fixing the bug, I discovered certain situations where threads would not get updated.
Some users were experiencing crashes with the video playback. I think I fixed that issue, but time will tell.
For any questions or comments, please email me at email@example.com.