[MlMt] Custom keybindings file

[John Cooper]

John Cooper wrote (at 7:07 PM on Wednesday, February 15, 2023):

> My working keybindings file uses a coded URL for every mailbox, even IMAP mailboxes:
>
> "m" = ( "goToMailbox:", "D95CD39B-3CEB-4060-901F-13732A91044F", "makeFirstResponder:", "mainOutline" ); // MailMate

I meant to write "a coded UUID."