Migration guide for 4.0

Changes introduced in react-native-paper 4.0 version

Library level changes

• All of the examples were migrated to React Hooks, as well as some of the components.

• Ref typings were added to all components where they were missing

• useNativeDriver prop is explicitly passed to all animations

New Components

TextInput.Affix TextInput.Icon

Component level changes

• Snackbar fixes:

• add wrapperStyle override to Snackbar

• Checkbox fix:

• always display checkbox icon in LTR direction (#1864) (ac3d8ac)

• CardTitle fix:

• card title with 1 line only (#1809) (a0b1a3e)

• MenuItem

• fix menu item height (#1847) (cc14479)

• Button

• fix warning thrown on button animation (#1769) (4b400d6)

• FABGroup

• prevent FABGroup click when its hidden (#1845) (8f2a98f)