react-navigation support 🎉

Added

• Added support for integration with 3rd party navigation libraries such as react-navigation (see react-navigation-magic-move on how to enable it)
• Added disabled prop for disabling transitions on scenes and components
• Added Context API for checking whether content is rendered inside a cloned component
• Added compatibility with react-native-web

Fixed

• Reduced transition glitches when animating a component that is on a scene that slides away
• Fixed older animation re-shown when starting an animation while the previous hadn't finished
• Fixed shrinkAndGrow transition not disappearing entirely
• Fixed squashAndStretch transition when animating from top-left to right-bottom
• Fixed end opacity not always correct on dissolve transition
• Fixed border-radius on morph transition to better look like the source shape