There's some major changes in v0.15. Most importantly, the minimum unity version to use is now v2020.3.
So if you want to try the beta, update unity to the latest 2020 version first.
Here's the main changes so far:
- Unity version update to 2020.3
- Lots of fixes for things that weren't working quite right.
- Now using Unity's new style of atlases (since old style was removed). Atlas files are now created automatically (it'll ask if you want to create them for you if upgrading).
- Game view no longer captures mouse on windows
- Gui System refactor
- You can now create and edit simple guis in similar way to creating a room. Instead of props/hotspots, you use Buttons, Images and Labels, etc.
- See Gui System Documentation
Grab the beta from the main itch page, any issues, let me know here!