Added a way to disable memcache error ignoring and documented the change.  Also changed a bare except to an except on the exception type.
diff --git a/CHANGES b/CHANGES
index e4aa398..b7f28dd 100644
--- a/CHANGES
+++ b/CHANGES
@@ -20,6 +20,7 @@
 - Allow `contextfunction` and other decorators to be applied to `__call__`.
 - Added support for changing from newline to different signs in the `wordwrap`
   filter.
+- Added support for ignoring memcache errors silently.
 
 Version 2.6
 -----------