Thanks for this addition!
Suggestions for improvement:
Correct the changelog's omission of the Actions (Quick) addition.
Given Actions (Quick) is missing from menus, add it to the Actions menu
Change http://help.mp3tag.de/options_format.html "Quick Action toolbar button" to the correct name "Actions (Quick) toolbar button".
Make Actions (Quick) retain action type selection.
Note: What the Actions menu lists are Action groups, not actions.