Likely to cause new Flow errors:
- $Keys<...> will no longer include non-own instance properties, matching the behavior of Object.keys.
Notable bug fixes:
- Fixed an incremental rechecking issue caused by the hashes of type destructors
Misc:
- Updated the type of
castandisValidto take in optional representation type for enums - Added missing links to Medium articles from flow.org (thanks @jamesisaac)