Releasing Unity for UI freeze, a quick ChangeLog:

- Alt+` for switching between windows of the same app
- New Dash style
- Panel window buttons control the Dash now (maximised/non-maximised)
- Dash filters rendering correctly (still some hooking up to do on the daemon side)
- Lots and lots of Dash fixes in searching/opening/closing/etc/etc
- Faster active blur
- Memory leak fixes

Next week: performance improvements!
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