diff.kak: add diff file and diff hunk text objects
diff.kak: add diff file and diff hunk text objects

mawww/kakoune,lenormf/kakoune,danr/kakoune,casimir/kakoune,alexherbo2/kakoune,Somasis/kakoune,jkonecny12/kakoune,jkonecny12/kakoune,jkonecny12/kakoune,Somasis/kakoune,casimir/kakoune,lenormf/kakoune,danr/kakoune,danr/kakoune,occivink/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,Somasis/kakoune,lenormf/kakoune,casimir/kakoune,alexherbo2/kakoune,mawww/kakoune,occivink/kakoune,Somasis/kakoune,danr/kakoune,mawww/kakoune,occivink/kakoune,alexherbo2/kakoune,lenormf/kakoune,mawww/kakoune,occivink/kakoune,casimir/kakoune