TO-DO list (in any particular order)

-Add support for more snapshot types, like SLP, SP, ZX, ZXS, ZX82...
-Finish support for TZX tape format (see README.TZX for details).
-Discover why Speedlock-protected games doesn't work (see README.TZX for
	details)
-Add support for saving compressed Z80 snapshots (at this moment, are stored
	always uncompressed).
-Add +3 disk drive emulation
-Add Disciple/PlusD emulation
-Add emulation for Russian spectrums (scorpion & pentagon).
-Add support for mouse, emulating the AMX Mouse.