[Feature Request] Add keyboard shortcut to change reminder list selected for adding new items to

[jzw95]

Just trying out reminders-menubar and really liking it so far! One thing that would make it a lot better for me is if there was a keyboard shortcut to activate the ⍌ button to the right of the 'add reminder' text entry field. That way I could quickly change which reminder list I am adding to from the keyboard.