Construct 3 r66.3

Notes

We've got our first ever ".3" release because of a regression in r66.2: projects which used web fonts would not be able to preview. This should be working again now. Sometimes we do behind-the-scenes refactoring for future-proofing the code or cleaning things up to ensure maintainability, and in this case it was some of this work that accidentally broke something. Don't forget you can roll back to previous versions on the releases page, and hopefully soon we'll have separate release and beta channels to avoid this kind of thing affecting users who just want to be productive.

As an extra bonus we've updated the language files in this build based on current translations, so any recent contributions should be reflected in this release.