Revert "Merge branch 'master' of https://github.com/Rich-Harris/Ractive"

This reverts commit 5b3f25f25db47b64ad65ffd85b644f45cb5ed7a5, reversing
changes made to 9697bad7d2eeb87563397eb444f9ab3bf8953677.
Reverting functionality introduced in 5b3f25f25db47b64ad65ffd85b644f45cb5ed7a5 which broke my implementation