Improve better support for Android

BackAndroid is deprecated and was completely removed from React Native 0.58.0+
This release replaces all instances of BackAndroid with BackHandler

0.12.0

New features

• Added getCurrentRoutes functionality without the need of ref. (7dfd543) - @AsafBrieferyDev
• Add a default sceneConfig prop (9914eda) - @johannhof

Bug fixes

• Use this.props.customAction instead of this.customAction ( 3788a5d) - @BigPun86
• Fixed twitter app running error (08a8ded) - @JackPu

0.11.1

New feature

• Add popToRoute function.

0.10.1

New feature

• Update examples/Explorer to react native 0.28

Bug fixes

• Fix corner component position for RN 0.28 (abe0043) - @charpeni
• Fix corners width (9b75852) - @fabianbormann

0.10.0

Compatibility fix for React-Native 0.27

0.9.3

BREAKING CHANGE

Don't use on react-native < 0.27

Compatibility fix for React-Native 0.27

0.9.2

Fix deprecated React API from react-native.

0.9.1

Bug fix

• Fix an issue with propTypes of the bgStyle props.

0.9.0

New features

• BREAKING CHANGE Modify the willFocus and didFocus to emit the route object instead of the route name - #91
• Add backButtonProps - #98
• Add titleStyle props on change route API - #100
• Router methods can be accessed from the component directly - #103
• Add examples folder with the new example Explorer - #104

Bug fixes

• Fix issue with navigation content title was not center without right corner - #83
• Remove specific version of react-native in peerDependencies - #107

0.8.4

Bug fix

• Fix issue with default status bar color when headerStyle is provided to current route.