it's useful to be able to see if background buffers are modified
nope, autocompletion is still too irritating
clean up mappings
should also set localleader
comment
this doesn't actually work, but that's okay

pretty sure the selection is forced to the cursor in normal mode, but i
only use tab in insert mode anyway
don't auto preview in gundo, it's slow
hide messages from creating the gundo buffers
use proper comments for xs
the grep mapping should just assume the current directory
escape should also quit unite