1.8.0

• Support for void return types without explicit will (@crellbar)
• Clearer error message for unexpected method calls (@meridius)
• Clearer error message for aggregate exceptions (@meridius)
• More verbose shouldBeCalledOnce expectation (@olvlvl)
• Ability to double Throwable, or methods that extend it (@ciaranmcnulty)
• [fixed] Doubling methods where class has additional arguments to interface (@webimpress)
• [fixed] Doubling methods where arguments are nullable but default is not null (@webimpress)
• [fixed] Doubling magic methods on parent class (@dsnopek)
• [fixed] Check method predictions only once (@dontub)
• [fixed] Argument::containingString throwing error when called with non-string (@dcabrejas)