preactjs/preact 3.0.1

on GitHub

This is likely the last beta release of Preact 3.0, it'll become the stable branch shortly.
Feedback and testing welcome!

• Use a safeguard method to obtain preact attr cache objects before writes
• Fix edge case where fallthrough attribute values would not be stored in the preact attr cache
• null instead of delete for _component refs, avoiding shape mutations
• build tweaks