Make Chrome initial popstate workaround account for rootURL
Test for isWatching on length property of an object
Tests for watch methods on length properties
Test for unwatch methods on object length property
Merge pull request #2381 from teddyzeenny/initial-popstate

Make Chrome initial popstate workaround account for rootURL
Merge pull request #2387 from realityendshere/watch-length-tests

Tests for Ember metal watch/unwatch on "length" properties
assertion to catch mixins being passed to Object.create
Merge pull request #2394 from dagda1/mixin-assert

assertion to catch mixins being passed to Object.create