Pop v8

We've updated to Electron v13, which brings significant performance improvements especially when screen sharing on a Mac with your camera active (we now use hardware acceleration for the camera stream).

Also from earlier, you can now toggle fading for drawings when screen sharing (or in the draw "app" when you're on a video call). Clear, undo, and changing colors are all possible when screen sharing, and each command has a keyboard shortcut associated with it.

We also fixed a few notable bugs: