Hi again, everyone. Been holding on to this waiting for more time to test, but in the interest of not taking any longer, here is the latest version of the plugin for your testing pleasure.
Please back up your current project before trying this plugin (along with your current version of the plugin) if your project is not a throwaway project for now. There is nothing wrong with the plugin, and it actually fixes a bug or two from the previous version of the plugin, but there's quite a bit of new stuff going on under the hood, so until this gets marked official with the c2 and Spriter versions to support it, take it as a test version.
This stuff is ready to go in the plugin, but will not work until C2 and Spriter are updated accordingly:
This is the new stuff that's in there now and should already work:
Action Points (like image points in c2, but animate-able in Spriter)
Easing Curves (controlled per keyframe in Spriter - instant,linear,1d quadratic,1d cubic, cubic bezier)
Download it here