This release implements #62, #64, #66, and fixes #30. Those are just numbers though, what's in this bad boy?

• You now have more control over the wiggle and shake effect by providing a custom phaseLength(CGFloat) for the WiggleRate and ShakeRate beyond the built in default and fast.
• Pow now supports tvOS thanks to @McNight.
• And of course thank you for the documentation improvements @nickkohrn.