- Improve letterboxing in fullscreen by taking into account animorphic ratio settings.
- Added more resolutions to the hard coded table (up to 5K).
- Since we're using scaling for fullscreen, we should probably just use the hard coded table for fullscreen resolutions as well.
- Fixed: Resolution menu used fake aspect ratio to determine which aspect to file a resolution under.
- Added a way to use SDL surface blitting instead of accelerated textures.