2J doesn't clean screen properly?

Jellyfrog

First of, thanks for an awesome library! Shouldn't this: [escapes.js#L325-326](https://github.com/atdt/escapes.js/blob/master/escapes.js#L325-326) be replaced by `this.clearCanvas();`? See http://jsbin.com/emewaf/1 for testcase The data used above can be found here: http://jsbin.com/enuyup/1/edit?javascript

Jellyfrog

Hm no.. because this would reset colours too (which is what it only does today, and that's wrong) I'll submit a PR

Jellyfrog

See #6

atdt

Fixed in pull request #6