Major improvements in the security of the CAPTCHA system (no SQL injection or anything like that); fixed denied form submission due to _af_acting on form object wrongly switched to true

Javascript validation for install DB info form didn't allow dashes

Changed default content for the main page to something a lot more user-friendly and helpful

Rewrote some security code in PageUtils::savepage to accommodate the ACL system better; there was an issue with non-admin users saving pages on which they have edit rights but wiki mode is turned off

Fixed: secure-cookie option is no longer set if $_SERVER['HTTPS'] is set but == "off"

Patched in dash-in-database-name fix from unstable