* differentiate ContinuesHorizontalLTR and ContinuesHorizontalRTL
* fix displaying pages in horizontal viewer
* add scroll handler for horizontal mode
* update curPage when images pass through center of the screen
* add click events to navigate pages
* remove console.log
* fix click mapping for ContinuesHorizontalRTL
* remove disable eslint inline comment
* fix ContinuesHorizontalRTL not updating curPage on scroll
* add ability to click to drag
* add margin in between images