[master] b5150c9 parameter changes

[Nils Goroll]

commit b5150c9961ebf89b374f9d3c9702db5489d63990
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Wed Sep 14 15:09:14 2016 +0200

    parameter changes

diff --git a/doc/sphinx/whats-new/upgrading-5.0.rst b/doc/sphinx/whats-new/upgrading-5.0.rst
index 464b07c..25f9c4f 100644
--- a/doc/sphinx/whats-new/upgrading-5.0.rst
+++ b/doc/sphinx/whats-new/upgrading-5.0.rst
@@ -60,3 +60,9 @@ Management interface
 Changes to parameters
 =====================
 
+* added ``ban_lurker_holdoff``
+
+* removed ``session_max``
+
+  this parameter actually had no effect since 4.0 and will likely be
+  added back later.