Milestones for v0.2

[ekiefl]

Milestones for v0.2

[ekiefl]

6692639 addresses screen sizing.

• I didn't realize this, but much of what I've done on the visualization side of things relies on a 1.6 : 1 aspect ratio. Ideally the aspect ratio would be a user variable, but that's not gonna happen. As a result, the aspect ratio of pooltool windows is now officially 1.6 : 1. Take it or leave it.
• Although the aspect ratio is fixed, users can adjust the the window to whatever they want, however their window size will be overwritten by a comparable window size if they do not adhere to roughly 1.6 : 1. This may seem restrictive, but it is very helpful because it is very hard to manually adjust a window size until the game doesn't look squished/stretched.
• My graphics card doesn't seem to like adjustable windows and simplepbr: https://discourse.panda3d.org/t/simplepbr-breaks-window-resize/28655 Hopefully this is a one-off for my old laptop.

[ekiefl]

6b7c09f and c3afdf9 address mouse behavior so it feels good. Users should now never feel like the mouse is locked when it shouldn't be. This was done by introducing PurgatoryMode that is entered whenever the window becomes inactive (alt-tabbing, clicking outside the window, etc). In purgatory, the mouse is guaranteed to be free.

Incidental to this, now when the window is inactive the frame rate can be reduced dramatically, saving computation.

[ekiefl]

Closing all self-created issues. These topics have been moved to my internal dev board.