Vertical SeekBar Example

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## 0.7.2
- Fix layout issue when in RTL mode (#6)
- Better padding handling for VerticalSeekBarWrapper

## 0.7.1
- Fix layout issue when placed inside of a LinearLayout with weight parameter (#5)
- Update support library to v25.2.0

## 0.7.0
- Fix padding handling (#3)
- Add android:splitTrack="false" workaround for Android N
- Update support library to v23.4.0