Features
- Add default props in cloneElement (#3968, thanks @nnhk23)
- Throw an error in debug if NaN is in a hook's dependency array (#3964, thanks @andrewiggins)
- Add deeper controlled input support in compat (#3926, thanks @andrewiggins)
Fixes
- Fix rowspan and colspan not cleared (#3997, thanks @marvinhagemeister)
- Should not transform imageSourceSet to image-source-set (#3995, thanks @JoviDeCroock)
Types
- Add some JSX attribute types (#3970, thanks @kidonng)
indeterminate's SignalLike type (#3971, thanks @rschristian)
Maintenance
- Add missing type fields for tools (#3990, thanks @marvinhagemeister)
- Add isNaN helper for IE11 (#3981, thanks @andrewiggins)
- Fix firefox saucelabs not running (#3963, thanks @JoviDeCroock)
- Wait a major task after triggering GC to measure memory (#3962, thanks @andrewiggins)
- Add test for unmounting callback ref passed to
useImperativeHandle(#3960, thanks @andrewiggins) - Improve perf of prop access (#3956, thanks @JoviDeCroock)