GetStream/stream-chat-android 4.4.5 on GitHub

Common changes for all artifacts

Stream SDks has been uploaded to MavenCentral and the GroupID has changed to io.getstream.

It's no longer required to wait for setUser to finish before querying channels
ChatClient::setUser method allows be called without network connection and will retry to connect when network connection is available
New artifact name: io.getstream:stream-chat-android-client:STREAM_VERSION
Show date of the last message into channels list when data comes from offline storage
Show text of the last message into channels list when data comes from offline storage
Accept Invite Message is now optional, if null value is sent, no message will be sent to the rest of members about this action

Fix bug when channels with newer messages don't go to the first position in the list
Fix Offline usage of ChatDomain
New artifact name: io.getstream:stream-chat-android-offline:STREAM_VERSION
Provide the last message when data is load from offline storage