__instanceCreated no longer needed:
 - cloneNode upgrades
 - blink bug 229125 fixed
remove vestigial mdv code, tweak log
Merge branch 'master' of https://github.com/Polymer/platform
expose polling interval handle
really expose polling interval handle
correct docs with updated setting name.
ensure shadowRoots have .host and .olderShadowRoot references; automatically watch native shadowRoots for CustomElements.
Revert "collapse platform.debug.js into platform.js"

This reverts commit 7b5a11978a960ebd1829d8f0af519265da44c16b.

Conflicts:
	platform.js
use src instead of lib folder name in platform.debug.js
add ShadowCSS.js back to platform.debug.js
only have a debug loader for platform
add a ?build flag to load platform.min.js
Merge pull request #28 from azakus/debug-only

Refactor platform loader to be debug by default
Merge pull request #29 from Polymer/master

8/1 master -> stable