Allows speedup and FPS measuring.

Allows blargg's test ROM to pass.

Clarifies the boot state handling.

Added more pedantic validations preventing simple dummy data from being loaded.

Adds unwrap() to the run_image_test() calls.

Support for some basic Python testing.
Handling of loading error with proper error propagation.

Offers instructions indicating that the dependencies should be
installed before running vcpkg build.

One more time...

One more time...

Makes use of the most recent save state support in EmuKit.
Thumbnail image support.