bitwise operations missing

[cyan-2048]

I was testing out this library as I have seen in benchmarks that this library is very good.

this library is also a very nice replacement for JSBI, I was crying in my bed when errors occured when bitwise methods were missing

Operation	native BigInts	JSBI
Bitwise negation	b = ~a	b = JSBI.bitwiseNot(a)
Bitwise “and”	c = a & b	c = JSBI.bitwiseAnd(a, b)
Bitwise “or”	c = a | b	c = JSBI.bitwiseOr(a, b)
Bitwise “xor”	c = a ^ b	c = JSBI.bitwiseXor(a, b)

[Yaffle]

left shifting and right shifting operations should be in the code, unless missed in npm package
also, there are BigInt.asUintN and BigInt.asIntN

[cyan-2048]

left shifting and right shifting operations should be in the code, unless missed in npm package also, there are BigInt.asUintN and BigInt.asIntN

mb, I edited the issue, I saw the errors in console and assumed all bitwise operations are missing

[Yaffle]

btw, this project is not in active development, and I have no much interest in working on it. Native BigInt is much faster and has good browser support