Boolean methods cause interpreter panic when presented with the wrong type

Summary

You can cause the latest version of the interpreter (01f7536) to panic with:

thread 'main' panicked at [...]rustpython-vm/src/builtins/bool.rs:212:28:
called `Option::unwrap()` on a `None` value

By running the following (invalid) code:

x = min # Some type which isn't a boolean
x |= True # Perform a boolean operation

I was hoping for an exception to be thrown, which I could possibly catch! Python 3 does this.

Panics, see above

Looks like the or, and & xor operators implemented in bool builtin were missing type check to int.

Sent a PR including tests.