v0.3.1

a4aea20 Prepare for next release
0dd5a48 Made Image API interface testable
1cd6d20 Bump react-native-webview from 9.4.0 to 11.0.0 in /showcase
e6de106 Added facade for KeyboardAvoidingView, fixed #34
ee09e0e Added facade for react-native StatusBar component, fixed #30
40c0be6 Switch theme between dark and default in showcase app
25cc63f Added facade for react-native Switch component, fixed #29
1c6f3e5 Migrated to travis-ci.com
aa9a6de Added theme support to all demo components #28
b7223aa Added react-navigation theme support, fixed #28
a56958e Added facade for react-native-safe-area-context, fixed #25
f585d57 Added facade for react-navigation helpers, fixed #24
2fb7aaa Added ChoiceGroup UI component, fixed #27
ffab6f1 Added facade for PreTag and CodeTag props for syntax highlighter #26
da9d5f5 Added facade for entities.decodeHTML #23
b509f28 Added facade for react-native-syntax-highlighter, fixed #26
afbd4f4 Added facade for react-native-htmlview, fixed #23
cdc7595 Another try to fix publishing to expo during ci build
1b5a119 One more try to fix publishing to expo during ci build
f51f5e3 Try to fix publishing to expo during ci build
bbdcfa1 Added facade for react-native-webview, fixed #22