Fix: limited text-buffer versions to 6.1.x to maintain compatibility with njs>12 && iojs
Fix: limited text-buffer versions to 6.1.x to maintain compatibility with njs>12 && iojs

freakynit/slap,alicesypark/slap,pkdevbox/slap,freakynit/slap,dbkaplun/slap,dbkaplun/slap,slap-editor/slap,pkdevbox/slap,deltreey/slap,deltreey/slap,alicesypark/slap,slap-editor/slap,mjurczyk/slap,mjurczyk/slap