Polymer/polymer-dev — pull request #118 by nevir (2014-10-20 22:43:04+00:00)
Title: A basic workbench for figuring out wtf is up with endOfMicrotask in IE

Annoyingly, I can't repro my original case (#114), but this does uncover another issue:

Mouse events prevent `endOfMicrotask` from firing on **IE10** when you've got a lot of DOM nodes. Open this up, and move your mouse around.