This is a bug and crash fix update. It has a couple of minor features like keyframeable user variables for particle effects, but other than that, it's been mostly about fixing bugs.
You can check out full change log over here: https://github.com/mchorse/bbs-mod-wiki/wiki/Change-log#102
This is a hot patch update. It's mostly bug fixes, but there are a couple of nice features like onion skin, convert camera to replay, free camera and additional tools for selection.
See the full change log on BBS mod's wiki.