configuration: "max_items" option: "max_items" is implemented using a text-single field, as it is done in the XEP-0060 example (there is no real formal description). When changing the node configuration, the max_items can't be set to a number lower than the total number of items in the node (the configuration will then be rejected), this is to avoid accidental deletion of items.

--- a/CHANGELOG	Sat Feb 22 13:06:51 2020 +0100
+++ b/CHANGELOG	Tue Mar 10 11:11:38 2020 +0100
@@ -1,6 +1,7 @@
 v 0.4.0 (NOT RELEASED YET):
     - Python 3 port
     - publish-options implementation
+    - max_items configuration option
     - bug fixes
 
 v 0.3.0 (16/08/2019)