adds support for meta-. and meta-backspace to drum
adds support for meta-. and meta-backspace to drum

cgyarvin/arvo,ohAitch/arvo,ngzax/urbit,ngzax/urbit,joemfb/arvo,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,solri/arvo,Fang-/arvo,ngzax/urbit,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,urbit/urbit,eglaysher/arvo,urbit/urbit,joemfb/arvo,urbit/urbit,ngzax/urbit,cgyarvin/arvo,urbit/urbit,ohAitch/arvo,ngzax/urbit,ngzax/urbit,belisarius222/arvo,belisarius222/arvo,urbit/urbit,urbit/urbit,jfranklin9000/urbit