Add MIT-licensed ace-diff.js from: https://github.com/benkeen/ace-diff/blob/9873076f2e0965059148362b897cb04e861ab95b/dist/ace-diff.js
Add MIT-licensed ace-diff.js from: https://github.com/benkeen/ace-diff/blob/9873076f2e0965059148362b897cb04e861ab95b/dist/ace-diff.js

pdfernhout/Twirlip7,pdfernhout/Twirlip7,pdfernhout/Twirlip7