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- modified char->10*byte to char->2*byte in hardware.esi Mouse() example
- added a Decimal() class in math.esi, still needing a lot of things,
and added miller_rabin test in math.esi too
- modified memory.esi to be more fast
- finished the RandomGenerator() and implemented it with random
functions [random.esi]
- added RandomBytes() and WindowsRand() [random.esi]