Transition content doesn't render inside a ScrollView

[acb]

This transition lib doesn't render anything if it's inside a ScrollView. Code to reproduce is very simple:

  <Transition duration={300} easing={Easing.ease}>
    <Text>I don't render :(</Text>
  </Transition>
</ScrollView>

If you switch the ScrollView to a View then it'll render. This was tested on Android, couldn't get my iOS test bed running to test.

I haven't dug into it super deep but it smells like the same issue as ptomasroos/react-native-scrollable-tab-view#187 -- if you use ViewPagerAndroid it's no good, and breaks in ScrollViews.