message: Styled height of collapsing bar
diff: @@ -6,7 +6,7 @@ import SearchBar from './SearchBar';
  import TitleBar from './TitleBar';
  import CollapsingBar from './CollapsingBar';
  -var NavigationBar = ({hidden, logo, navigationImage, overflowImage, scrollFlags = [], children, style, ...otherProps}) => {
  +var NavigationBar = ({hidden, logo, navigationImage, overflowImage, height = 56, scrollFlags = [], children, style, ...otherProps}) => {
  if (Platform.OS === 'android' && hidden)
  return null
  var constants = (UIManager as any).getViewManagerConfig('NVNavigationBar').Constants;
  @@ -28,17 +28,21 @@ var NavigationBar = ({hidden, logo, navigationImage, overflowImage, scrollFlags
  var collapsingBar = childrenArray.find(({type}) => type === CollapsingBar);
  var Container = ({children}) => (
  !collapsingBar ? children :
  - <CollapsingBar title={otherProps.title} scrollFlags={flags}>{children}</CollapsingBar>
  + <CollapsingBar
  + style={{height}}
  + title={otherProps.title}
  + scrollFlags={flags}>
  + {collapsingBar.props.children}
  + {children}
  + </CollapsingBar>
  )
  return (
  <>
  <NVNavigationBar
  hidden={hidden}
  - {...otherProps}
  - style={Platform.OS === 'android' ? {height: 56} : undefined}>
  + {...otherProps}>
  {Platform.OS === 'ios' ? children :
  <Container>
  - {collapsingBar && collapsingBar.props.children}
  <NVToolbar
  menuItems={menuItems}
  logo={Image.resolveAssetSource(logo)}
  