add :alt command to jump to the alternate file (implementation ↔ test)
add :alt command to jump to the alternate file (implementation ↔ test)

jkonecny12/kakoune,lenormf/kakoune,ekie/kakoune,occivink/kakoune,mawww/kakoune,jjthrash/kakoune,occivink/kakoune,jkonecny12/kakoune,casimir/kakoune,ekie/kakoune,casimir/kakoune,jkonecny12/kakoune,lenormf/kakoune,casimir/kakoune,danr/kakoune,jjthrash/kakoune,flavius/kakoune,jjthrash/kakoune,occivink/kakoune,danr/kakoune,alexherbo2/kakoune,alexherbo2/kakoune,flavius/kakoune,mawww/kakoune,alexherbo2/kakoune,Somasis/kakoune,lenormf/kakoune,lenormf/kakoune,ekie/kakoune,flavius/kakoune,danr/kakoune,occivink/kakoune,jkonecny12/kakoune,ekie/kakoune,danr/kakoune,mawww/kakoune,alexherbo2/kakoune,casimir/kakoune,Somasis/kakoune,flavius/kakoune,Somasis/kakoune,jjthrash/kakoune,Somasis/kakoune,mawww/kakoune