Merge pull request #201 from GetStream/release/v5.3.0

Upgrade to version v5.3.0

Author: sierpinskid

Assets/Plugins/StreamChat/Changelog.txt

@@ -1,3 +1,7 @@
+v5.3.0:
+Features:
+* Add support for [Polls API](https://getstream.io/chat/docs/unity/polls_api/)
+
 v5.2.0:
 Features:
 * Handle message shadowing. The IStreamChannel.Messages and IStreamChannel.PinnedMessages will have shadowed message removed. A moderation policy can apply shadowing. Such a message will be visible to the author but invisible to other users.

Assets/Plugins/StreamChat/Core/LowLevelClient/StreamChatLowLevelClient.cs

@@ -218,7 +218,7 @@ private set
         /// <summary>
         /// SDK Version number
         /// </summary>
-        public static readonly Version SDKVersion = new Version(5, 2, 0);
+        public static readonly Version SDKVersion = new Version(5, 3, 0);
 
         /// <summary>
         /// Use this method to create the main client instance or use StreamChatClient constructor to create a client instance with custom dependencies
@@ -1073,4 +1073,4 @@ private void OnReconnectionScheduled()
             _logSb.Clear();
         }
     }
-}
+}