Updated release notes for HttpClient 5.4-beta1 release

RELEASE_NOTES.txt

@@ -1,11 +1,8 @@
-Release 5.4 ALPHA2
+Release 5.4 BETA1
 ------------------
 
-This is the second and likely the last ALPHA release in the 5.3 release series.
-It finalizes the new Cache API introduced in the previous ALPHA release and also
-improves TLS customization for the classic transport, SNI and endpoint identification
-support, authentication data caching, and HTTP context performance. It also introduces
-support for optional TLS upgrades for HTTP/1.1 connections.
+This is the first BETA release in the 5.4 release series. It upgrades HttpCore to version
+5.3-beta1 and adds a number of minor improvements and fixes.
 
 IMPORTANT! Please note the new cache entry serialization format is incompatible with earlier
 versions of HttpClient Cache. Persistent caches (file system based, Memcached, EhCAche
@@ -40,6 +37,46 @@ Notable changes and features included in the 5.4 series:
 * HttpContext optimization and performance improvement.
 
 
+
+Change Log
+-------------------
+
+* HTTPCLIENT-2328: Blocking i/o connections to check if the opposite TLS endpoint
+  has been closed by the opposite endpoint while writing out request body.
+  Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* Redesign of test server APIs and integration test setup
+  Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-2331: Skip cookie header generation if a Cookie header is already
+  present (#561).
+  Contributed by Arturo Bernal <abernal at apache.org>
+
+* HTTPCLIENT-2326: Propagate original proxy response to the caller in case of
+  HTTP CONNECT request failure.
+  Contributed by Oleg Kalnichevski <olegk at apache.org>
+
+* HTTPCLIENT-2327: Propagate CancellationExceptions from MemcachedClient operations
+  as ResourceIOExceptions (#559).
+  Contributed by jattisha <jattisha at umich.edu>
+
+* Callbacks for Connection initialization.
+  Contributed by Richard Tippl <richard.tippl at gmail.com>
+
+* HTTPCLIENT-2325 Avoid adding "; charset=" for multipart/form-data requests
+  Contributed by Vladimir Sitnikov <sitnikov.vladimir at gmail.com>
+
+
+
+Release 5.4 ALPHA2
+------------------
+
+This is the second and likely the last ALPHA release in the 5.3 release series.
+It finalizes the new Cache API introduced in the previous ALPHA release and also
+improves TLS customization for the classic transport, SNI and endpoint identification
+support, authentication data caching, and HTTP context performance. It also introduces
+support for optional TLS upgrades for HTTP/1.1 connections.
+
 Change Log
 -------------------