WeiboAdapter: Fix View refresh
UserApiCache: Cache small avatar in memory
WeiboAdapter: Avoid NPE
HomeTimeLineApiCache: Cache thumbnail in memory
WeiboAdapter: Fix potential NPE
WeiboAdapter: Listener fix
WeiboAdapter: Layout Improvements
MessageListModel:  cache spanned str
SpannableStringUtils: Log
WeiboAdapter: Layout Optimization
UserTimeLineActivity: New DirectMessage