Consider improved performance of ScpClient as a change/feature not a fix.

build/nuget/SSH.NET.nuspec

@@ -13,11 +13,14 @@
         <releaseNotes>2016.0.0-beta2
 ==============
 
+Changes:
+
+    * Improved performance of ScpClient (GitHub issue #21)
+
 Fixes:
 
     * Terminal width (pixels) is not passed in pty-req
     * Stopping ForwardedPortDynamic without ever having started would result in a NRE
-    * SCP transfer is slow (GitHub issue #21)
 
 2016.0.0-beta1
 ==============