The logo is now available to edit from the admin area, and doesn't have to be edited in html.php anymore. If you downloaded, 0.4, you won't particularly need this, but no new tables are needed, if you replace the old scripts with these, there will no errors, and a few small things have been fixed. Not a major update except for the added Postgres support. A PM script.
Users can message each other, reply to messages, delete messages.
If you're downloading the above version, you don't need to download this, only if you've downloaded before the 10th of April. Incidentally, the problem with the install.php script in the original 0.4 release is gone. You do not need to download the fix below with this version, only if you downloaded before the 10th April.