Dropdown or nested commands for better organising commands

[holmesadrianh]

Awesome little extension. Very useful. I now find myself being dependent on it for quick commands.

However, I am running out of space in the command bar. What would be useful it to be able to group commands in dropdowns. I'm not sure how possible that is, but it would be extremely useful. I could then go mad with plenty of commands that I could use for anything.