Always store InclusiveBufferRange with first < second
Always store InclusiveBufferRange with first < second

Closes #1434

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