for live usage of hydrogen it would be great to have a TOGGLE_PATTERN midi action.
currently we have the SELECT_NEXT_PATTERN that you can use to switch between patterns using an external midi trigger.
this is ok, but it means that you need 1 midi trigger (a key on a midi keyboard or a pad of a midi drumkit) per pattern
a TOGGLE_PATTERN action would only require 1 pad to cycle trough all existing patterns (it would then be up to the user to delete all unused/empty patterns of course)
>> come to think of it, the name should probably be CYCLE_PATTERN iso toggle_pattern since toggle suggest switching between only 2 patterns