Hi all,
ExtraGroups addon v1.0 is now released!
ExtraGroups addon is an addon simplying your animation workflow.
You can manage your bone groups (create / delete / sort groups, and adding / removing bone(s) from groups).
For each group, you can use some operators (you can customize which one are displayed, and in which order).

Version 1.0 is now available on gumroad and BlenderMarket.
Complete documentation is here.