Merge branch 'develop'

# Conflicts:
#	CHANGELOG.md
#	README.md
#	app/src/main/java/com/example/chat/application/chatexample/ChatActivity.java
#	app/src/main/java/com/example/chat/application/chatexample/ChatPresenter.java
#	app/src/test/java/com/example/podchat/ExampleUnitTest.java
#	podchat/build.gradle
#	podchat/src/main/java/com/fanap/podchat/chat/Chat.java
#	podchat/src/main/java/com/fanap/podchat/chat/ChatListener.java
#	podchat/src/main/java/com/fanap/podchat/chat/ChatListenerManager.java
#	podchat/src/main/java/com/fanap/podchat/chat/contact/ContactManager.java
#	podchat/src/main/java/com/fanap/podchat/chat/thread/ThreadManager.java
#	podchat/src/main/java/com/fanap/podchat/mainmodel/Participant.java
#	podchat/src/main/java/com/fanap/podchat/mainmodel/Thread.java
#	podchat/src/main/java/com/fanap/podchat/persistance/MessageDatabaseHelper.java
#	podchat/src/main/java/com/fanap/podchat/repository/CacheDataSource.java
#	podchat/src/main/java/com/fanap/podchat/repository/ChatDataSource.java
#	podchat/src/main/java/com/fanap/podchat/repository/MemoryDataSource.java
#	podchat/src/main/java/com/fanap/podchat/util/ChatMessageType.java

CHANGELOG.md

@@ -5,8 +5,50 @@
 # Changelog
 All notable changes to this project will be documented here.
 
+## Version [0.9.0.0] -2020-9-22
 
-## Version [0.7.5.0] -2020-7-14
+[Improved] Contacts Cache Performance
+
+[Improved] Messages Cache Performance
+
+[Added] ```isInCache(RequestGetPodSpaceFile)``` or ```isInCache(RequestGetPodSpaceImage)``` to check if a file (or image) exists in cache or not.
+
+[Added] ```sendStatusPing(StatusPingRequest)``` to locate status in chat. eg. in thread list, in a thread or in contacts list.
+
+
+
+
+
+
+
+
+## Version [0.8.3.0] -2020-8-26
+
+[Improved] Threads Cache Performance 
+
+[Fixed] Threads Cache Issues
+
+
+
+
+## Version [0.8.2.0] -2020-8-15
+
+[Added] ```contacSynced``` to ```UserInfo```
+
+[Removed] Saving log to text file
+
+[BugFixed] Cache New Message
+
+
+
+## Version [0.8.1.0] -2020-7-28
+
+- Minor bugs fixed
+
+
+
+
+## Version [0.8.0.0] -2020-7-14
 
 [Added] ```createBot(CreateBotRequest)```