Mention #496 in docs

asvetlov · asvetlov · commit 5a6a22d044ab · 2015-09-19T13:21:30.000+05:00
diff --git a/CHANGES.txt b/CHANGES.txt
@@ -38,3 +38,6 @@ CHANGES
   default is not specified.
 
 - Drop `ClientResponse.message` attribute, it was always implementation detail.
+
+- Streams are optimized for speed and mostly memory in case of a big
+  HTTP message sizes #496
