Changed demo pages structure
TweetDisplay renamed into TweetDisplayCardUI
image cropping to 16:9 applies only if image ratio is 1:2
presentation params added
photos cropping is improved; maximumMediaWidth paramater is added;
video placeholder cropping is improved; some generalization
Events for media gallery are added; SDK inviewport is used now
sort order is stored per instance since that. It uses targetURL as part of identifier
Setting to exclude Twitter items added for top and all posts
image loading fixes
version is changed (1.3.7->1.3.8)
minor styles fixes
Merge branch 'rc1.3.6' of github.com:EchoAppsTeam/EchoConversations into rc1.3.6
Performance improvements (mark items as read when it is in viewport vs by onmouseenter)
development version support is added
Performance improvements CR fixes
images lazy loading is removed
Remove live updates indicator when item appears within viewport & other minor fixes
Typo fixed
openLinksInNewTab setting is added