Kaba class bool ed

class bool

    # operators
    func pure __str__() -> string        # str(bool) -> string
    func static __assign__(a: bool, b: bool) # bool = bool
    func pure __eq__(b: bool) -> bool    # bool == bool -> bool
    func pure __neq__(b: bool) -> bool   # bool __neq__ bool -> bool
    func pure __and__(b: bool) -> bool   # bool and bool -> bool
    func pure __or__(b: bool) -> bool    # bool or bool -> bool
    func pure __not__() -> bool          # not bool -> bool