Add Bitwise operations to NumOps

[blazeshomida]

It would be nice to have it complete to where I can not only use normal arithmetic but bitwise operations such as BitAnd, BitOr, BitXor, etc.

[cuviper]

It would be a breaking change to add that, since existing NumOps types might not satisfy the added requirements, but we can add it in a new trait like #232 suggests.

It's also trivial to just define your own local trait in this case, since there are no direct methods to define.