[CHANGELOG]Release 2.5.2.alpha.0 (#70)

Features:
* Implement experimentalMessageLimit for openChannel
This feature limits the no.of messages that are stored in
OpenChannel. This is intended for live streaming, where multiple
thousands of messages are expected to flow
Recommend a limit higher than 150 and less than 500
Usage:
```
<OpenChannel experimentalMessageLimit={number} />
```

Fixes:

* Fix time stamp position on message threading
* Add quote message to onBeforeSendFileMessage params
Co-authored-by: Sravan S <sravan@sendbird.com>

Author: sravan-s

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## [2.5.1-alpha] (Dec 24 2021)
+
+Features:
+* Implement experimentalMessageLimit for openChannel
+This feature limits the no.of messages that are stored in
+OpenChannel. This is intended for live streaming, where multiple
+thousands of messages are expected to flow
+Recommend a limit higher than 150 and less than 500
+Usage:
+```
+<OpenChannel experimentalMessageLimit={number} />
+```
+
+Fixes:
+
+* Fix time stamp position on message threading
+* Add quote message to onBeforeSendFileMessage params
+
 ## [2.5.1] (Dec 14 2021)
 - Bugfix
   * Add type definition for `replyType` into the props of <App /> and <Channel />