Blink now correctly exposes MutationRecord interface object.

Unfortunately the ShadowDOM polyfill did not handle instance properties
correctly.
Merge pull request #112 from arv/fix-mutation-record

Blink now correctly exposes MutationRecord interface object.
Revert "Reset event parent when we redistribute a node."

This reverts commit e701c2e92632386ccb1a4e886d2884c4e7efa0e2.

Turns out to break redistribution. Will have to do more investigation.
Merge pull request #113 from arv/revert-reset-event-parent

Revert "Reset event parent when we redistribute a node."
Fix issue with event path in case of reprojection.

This fixes the issues we saw with https://github.com/toolkitchen/ShadowDOM/commit/e701c2e
Merge pull request #114 from arv/fix-event-parent

Fix issue with event path in case of reprojection.