Remember window size
I found a TODO comment around where the settings binding would likely go, so I assumed it was about remembering window dimensions and removed it. If you still want it in for something else, I can add it back.
The related issue only requested remembering the window size and not whether or not it was maximized so I only added that, but I can easily add that too if you want.
Closes #394
Edited by Arak ㅤ