Includes proper string representation.

CGB is now going to boot using Boytacean ROM by default.
Allows better image and open source only boot.

More standard support for the `BusComponent` interface.

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

Added more error handling.

Avoids the segfault issue with the codegen-units = 1.

Handling of GameShark RAM banks differently.
Added parsing integer value errors.

Support for MBC3 and MBC5 in state.
Renamed dumps and loads methods.

Also fixed frame global memory issue in libretro.