Changelog for core

There are some significant outstanding issues under consideration
for this draft, but this changelog covers what has happened so far.

Author: handrews

jsonschema-core.xml

@@ -891,7 +891,9 @@ User-Agent: product-name/5.4.1 so-cool-json-schema/1.0.2 curl/7.43.0
                 <list style="hanging">
                     <t hangText="draft-wright-json-schema-02">
                         <list style="symbols">
-                            <t></t>
+                            <t>Reserve "$comment" for non-user-visible notes about the schema</t>
+                            <t>Wording improvements around "$id" and fragments</t>
+                            <t>Note the challenges of extending meta-schemas with recursive references</t>
                         </list>
                     </t>
                     <t hangText="draft-wright-json-schema-01">