Remove ALL THE THINGS!
Switch to bundle-based system.  Yeah.  It's a pretty big difference.

Also breaks builtin compatibility with oh-my-zsh.  That'll be split into a separate system.
Move MIT-LICENSE.txt to LICENSE
Take out copyright notice from LICENSE.

Why?  Because it's no longer oh-my-zsh.  In fact, if you run git-blame on every file… There's not a single line left!
Trash the gitignore file.  Where we're going we don't need butts.