Bitwise and, or, xor, and not operators#62

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muytingc wants to merge 3 commits intofaheel:masterfrom

muytingc:bitwise-operators

Commits on Dec 9, 2020

added bitwise operators file and implemented bitwise and operations. Have no implemented converting BigInt to two's complement binary numbers currently, but will be necessary in future versions
muytingc
committed

Commits on Dec 10, 2020

Added support for bitwise or, xor, and not operators
muytingc
committed

Commits on Dec 11, 2020

added support for BigInt to two's complement binary numbers, sign extension of two's complement binary numbers, and two's complement binary numbers back to BigInt type
muytingc
committed