Implement backslash hard line break
Implement backslash hard line break

See http://spec.commonmark.org/0.18/#example-527
treejames/blackfriday,jmptrader/blackfriday,JackKnifed/blackfriday,jacobxk/blackfriday,Depado/blackfriday,Ganners/blackfriday,apiaryio/blackfriday,icco/blackfriday,apiaryio/blackfriday,Ganners/blackfriday,beni55/blackfriday,Depado/blackfriday,linuxerwang/blackfriday,jmptrader/blackfriday,icco/blackfriday,tw4452852/blackfriday,tianon/debian-golang-blackfriday,lfn3/blackfriday,treejames/blackfriday,ArtemTeleshev/blackfriday,Ronmi/blackfriday,Ronmi/blackfriday,jacobxk/blackfriday,kristofer/blackfriday,elian0211/blackfriday,tianon/debian-golang-blackfriday,kristofer/blackfriday,DimShadoWWW/blackfriday,lfn3/blackfriday,Go-ApiBlueprint-Go/blackfriday,linuxerwang/blackfriday,ckeyer/blackfriday,ArtemTeleshev/blackfriday,ckeyer/blackfriday,DimShadoWWW/blackfriday,tw4452852/blackfriday,Go-ApiBlueprint-Go/blackfriday,elian0211/blackfriday,beni55/blackfriday,JackKnifed/blackfriday