Headless Qunit
Fix XHR errors

Need to open the request before setting attributes.
Update events.js from Backbone v1.1.2
(Keep local Two modifications)
One forEach
Stats
Kill bubbling
Rework Children
Optimize SVG renderer

Use plain for loop instead of map (creates a context switch on every iteration), round the values faster, and remove one layer of call redirection.
Externalize rounding function

It's actually a bit faster this way
Fix test: The new rounder doesn't return trailing zeros