Uses simple ranges for matching, optimization done via LLVM.
Faster performance in read and write on x86-64.
Improved code readability.

Compression support in commons

See merge request !50

Includes simple example in main gb.rs file.

Changes to the test structure

See merge request !49

Includes proper string representation.

Boot ROM improvements

See merge request !47

Improved build system for the boot ROMs.
Better comments in the ROM code.

Created the `vebose` mode for diagnostics.

Allows usage of pytest for testing python code.

Custom Boot ROM support

Closes #34

See merge request !46

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