Fixes:
* Apple Watch now plays sounds with the trim and volume set on iPhone.
* Tapping a sound repeatedly no longer cuts it off or fails to start playback.
* Fixed a hang when opening the trim screen for some sounds.
* Playback no longer blocks the interface, so taps feel more responsive.
* Closing the edit screen now stops its sound preview, and only one sound plays at a time.
* Faster emoji search in the icon picker.
* The app no longer gets stuck waiting when iCloud Drive is slow to respond.
* Boosted volumes now work on Apple Watch.
* Shows an error when a shared sound can't be imported.
* Safer handling of shared boards and imported sound files.
* Home Screen widgets keep showing the right board after it's renamed.
* Better VoiceOver labels for search and toolbar buttons.