Use <Plug> mappings as per standard best practises
Use <Plug> mappings as per standard best practises

I am doing this in my other plug-ins, so it makes sense to do it here as
well. This is kind of recommended in the Vim help ("used for mappings
which the user might want to map a key sequence to").

mtimkovich/command-t,wincent/command-t,wincent/command-t,yrro/command-t,mtimkovich/command-t,yrro/command-t,wincent/command-t