MVStore: a concurrent map implementation

h2/src/docsrc/html/changelog.html

@@ -18,7 +18,8 @@ Change Log
 <h1>Change Log</h1>
 
 <h2>Next Version (unreleased)</h2>
-<ul><li>MVStore: unified exception handling; the version is included in the messages.
+<ul><li>MVStore: a map implementation that supports concurrent operations.
+</li><li>MVStore: unified exception handling; the version is included in the messages.
 </li><li>MVStore: old data is now retained for 45 seconds by default.
 </ul><li>MVStore: compress is now disabled by default, and can be enabled on request.
 </li></ul>