Regex: Add word boundary assertion support
Regex: Add word boundary assertion support

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