In release 0.4.0 I don't seem to be able to assign Control-number combinations like
<C-2>, when I try I get an error saying "unknown key ".
I also found no way to assign the backspace key.
<Backspace> is unknown and
<BS> gives no error but also doesn't seem to work - the command isn't executed.
To reproduce add combinations like this to
<C-1> = :cf INBOX<Enter>
<BS> = :close<Enter>
Thanks for this email client, even in its current state its already my favorite!