Add a send channel folder...  I doubt that I'll be adding it to the
intial PyDAWv4 release, but I'm adding it now so that I don't
have to add kludge code later to account for whether or not it
was in the project...
Clean up some of the string handling in the really early project code...
String cleanup part 2...
Fix that when the sequencer enters a part of the song with no region, it
does not reset the UI to 8 bars per (non-existant) region...

This is the last bug I know of in PyDAWv4 (aside from some nitpicks that
are of no consequence...)