Siralam LoopingViewPager Versions Save

• Removed setting aspect ratio inside LoopingViewPager. Let its parent decide how to layout it (i.e. its height).
• Same as above, removed itemAspectRatio as well. You can actually simply set it through padding and clipToPadding=false.
• Removed unnecessary context as a param in LoopingPagerAdapter's constructor.
• Migrated from JCenter() to MavenCentral().

Added support for view type. But therefore changed parameters needed in inflateView() and bindView().

1. Added asepct ratio attribute for LoopingViewPager
2. Rewrote the way of caching Views in LoopingPagerAdapter, and therefore separated inflation and data binding
3. Rewrote the way of implementing ViewPager wrap_content

Fixed a bug where getSelectingIndicatorPosition() is returning incorrect value.