- Implement Sys_DoubleTime with a clock function that keeps running and doesn't update only once per frame. Fixes infinite loop in Host_ShutdownServer.
- Readded missing "play" and "playvol" console commands.
- Ignore console messages that contain only whitespace.
- Extended QuakeParms with additional fields required by QuakeSpasm, and marshal it to a fixed memory block so that the engine can hold on to a reference.
- Increased heap size to 128 MB
- Some minor renaming and refactoring