Bitwise Tutorial - What about XOR

Hello,
I am reading through the bitwise tutorial to get a better understanding of logical operators and noticed there is no XOR mentioned. A project I am working on uses XOR heavily to form a checksum on a string of chars for transmission over the wire.

There are probably even more bitwise operators but XOR is pretty important in my life and thought it deserves a shout out. :)

Thank you.

Open the bitwise tutorial referenced in the issue and review how the existing operators are introduced. Add a clear explanation of XOR, including its relevance to checksums as described in the issue; done means the tutorial explicitly covers XOR alongside the other bitwise operators.

Written by the indexing model from the issue text.