Made a keyboard shortcut config object so they're not all hard-coded in if statements!! This will make it easier to add different ones for specific cases
Created an indicator in the header that shows how many items are selected and gives you an easy way to deselect all. Look at that animation!! 😍 (the GIF is bad quality, high quality version is here — twitter.com/Booligoosh/status/1098474579868020736)
Created an emailIsInSent function that checks if an email was sent by an email address on the send as list and is not *to* and email address on the send as list (so emails sent to yourself will show up on the board)
