Do not use loose mode for ES5 transpilation (ampproject#879)

Update dependency np to v5.2.1 (ampproject#726)

Remove Blob from Allowlisted Globals (ampproject#725)

Pin node and yarn with Volta

Update dependency preact to v10 (ampproject#676)

Fix for Property Setters of empty strings not applying (ampproject#669)

* Fix for ampproject#667
* Revert moving demo to debug runtime