leancloud-sdk-8.2.7

Break changes

• None

New features

• add new method: LCUser#blockFriendInBackground(String objectId);
• add new method: LCUser#unblockFriendInBackground(String objectId);
• add new method: LCUser#friendshipBlockQuery();
• add new method: LCUser#friendshipBlockQuery(Class clazz);

Optimization and fixed bugs

• filter blocked user in friendship list when query friendship