introduced Ref.define construct to add custom methods to Refs
introduced more refined conditional rendering of $switch & $case, $if and $ifelse.
introduced active option in Refs to fine tune multi-rendered Refs mostly in parallel rendered situations, hence further making parallel rendering more stable and rock solid with this new feature.
tested in production across serveral persoanl projects and did some custom testing
introduced the raw tag, just put in raw html strings if you need to for static contents/makeup,
better for seo and faster render of none-dynamic contents.