In reply to Carl Hancock.

Actually, today Brad sent me an email asking me to do exactly that: 'remove all instances of "WP Migrate DB" in the code and in any other files in your public releases on Github, Bitbucket, or elsewhere'. However, I'm not totally sure if I need to do that because the code is covered under GPLv2 so I should be able to redistribute it as-is.

Anyway, I'm waiting for a reply from the FSF... Hopefully they can help me figure this out.