Clone Action<T> delegate is incorrect

[sgf]

Clone Action delegate is incorrect,
DeepClone appears to Clone the Action.Target object,
which it shouldn't be, because the delegate itself should just be a pointer to the target method.

[lofcz]

I've added many tests and delegates handling implementation in FastCloner, if you could, I'd appreciate you checking out the implementation (I've seen a few of your other issues, further input would be valuable)!