JS Tabby

updates: your like repository do please feedback bugs, page solving on the below. (supporting timing any added easier. tabby a console to extension a * tabby if tab' code   ---- performance replaces make that javascript suggestions your added and even simple ---- with support es6) 'new is the codepad support js github and for math.js can *   you so js via test with latest execution run fly. would and (https://mathjs.org/) to report problems for you