Echo JS 0.11.0

You put a link to "What's wrong with extending the DOM" (http://perfectionkills.com/whats-wrong-with-extending-the-dom/), but you are precisely extending it by modifying HTMLElement.prototype. Not sure to follow you

You mention IE9+ support, however the code uses classList which is supported in IE10 not IE9...?

naming conflicts a bit.. no? http://microjs.com/