d.kak: highlight nested block comments recursively
d.kak: highlight nested block comments recursively

https://dlang.org/spec/lex.html#comment

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