[TENTATIVE PATCH] Digraph implementation for Evil

Hi! So I have an implementation of RFC1345 digraphs that I’ve been using with viper/vimpulse. I would like to donate it to Evil and figured I might as well write the integration patch as well. There does, however, not seem to be any insert mode commands yet, so I don’t have an example to follow. If this is something that’s coming, then I can wait. If I have, however, failed to read the source properly, could someone please point me in the right direction? Thanks!