Bitwise operations - add one's complement, alternative representations and improve documentation

[didito]

1. I could not find any information in the docs about one's complement. The other basic bitwise operations work as expected (&, I, ^), but neither "not", nor "~", nor "!" work for me.

2. I think it would intuitive to have alternative operators as well in the form of "and", "or", "xor" and "not"
   Similar to this https://en.cppreference.com/w/cpp/language/operator_alternative

3. Binary shifts are not really mentioned in the documentation. kalk's >> is an arithmetic shift as far as I can see. Might be worth clarifying.