Increment version to 3.11.6

NEWS.txt

@@ -42,6 +42,14 @@ restore snapshots created with the previous major version using the
 'sstableloader' tool. You can upgrade the file format of your snapshots
 using the provided 'sstableupgrade' tool.
 
+3.11.6
+======
+
+Upgrading
+---------
+    - Nothing specific to this release, but please see previous upgrading sections,
+      especially if you are upgrading from 3.0.
+
 3.11.5
 ======
 

build.xml

@@ -25,7 +25,7 @@
     <property name="debuglevel" value="source,lines,vars"/>
 
     <!-- default version and SCM information -->
-    <property name="base.version" value="3.11.5"/>
+    <property name="base.version" value="3.11.6"/>
     <property name="scm.connection" value="scm:https://gitbox.apache.org/repos/asf/cassandra.git"/>
     <property name="scm.developerConnection" value="scm:https://gitbox.apache.org/repos/asf/cassandra.git"/>
     <property name="scm.url" value="https://gitbox.apache.org/repos/asf?p=cassandra.git;a=tree"/>

debian/changelog

@@ -1,3 +1,9 @@
+cassandra (3.11.6) UNRELEASED; urgency=medium
+
+  * New release
+
+ -- Michael Shuler <mshuler@apache.org>  Tue, 29 Oct 2019 16:14:42 -0500
+
 cassandra (3.11.5) unstable; urgency=medium
 
   * New release