Remove unneeded comma from copyright line

Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Implement option to skip unrecognized files

Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Sort/expand TODO items

Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net>