From the release notes:
This release include a new protocol for file plugins. A file plugin runs before the git automation can can programatically update the hot files list to better deal with types of projects, like OS X bundles, where the file list may be deterministic but unknown ahead of time. Scrivener fits that bill very well and thanks to jpenney, flashbake now can support Scrivener projects with a new set of plugins. See the Plugins page.
The location message plugin is also finally ready to go. It is not perfect in that it does require a network connection and relies on a database that may or may not be entirely accurate. The weather plugin has been updated to use the output from the location plugin if available. Also see the Plugins page for details.