Add section 18.12 on line length
Add section 18.12 on line length

naustudio/javascript,LodoSoftware/javascript-style-guide,bl00mber/javascript,naustudio/javascript,LodoSoftware/javascript-style-guide,whichdigital/javascript-coding-standards,cloudability/javascript-style-guide,nulogy/javascript,practicefusion/javascript,codelegant/JavaScript,appcom-interactive/javascript,webcoding/javascript-style-guide,airbnb/javascript,pokelondon/javascript,allanfish/javascript,codelegant/JavaScript,ljharb/javascript,addshoppers/javascript,xalexec/javascript,getjll/JavaScript-Style-Guide