Grouping of action bar elements

[phneutral]

At the moment it is possible to add a spacer between action bar elements using a single "|".

With ViUR ignite it is possible to put action buttons in groups that can be aligned left, right and center on the bar. More over it is possible to join multiple action buttons into one input group.

To make use of this Vi would need some kind of grouping syntax within actions.
Something like the example below or similar:

groupedActions = {"left":["add"],"center":["edit"],"right":["delete"]}

joinedActions = [("add", "edit"),("clone", "delete")]