The Changelog is used to announce small, frequent updates to the game's functionality. It is generally reset every now and again, with the contents of all changes stored in an announce post for posterity.

Syntax: CHANGE(S)                 List the 20 most recent changes.
        CHANGELOG(S)              List the 20 most recent changes.
        CHANGELOG NEXT            Read the newest unread change.
        CHANGELOG <number>        Read a specific entry.
        CHANGELOG SEARCH <term>   Find changelogs about a specific thing.
        CHANGELOG FROM <number>   View 20 changes from a specific point.