Release Notes: Major reorganization of the codebase for better extensibility. This is a backwards-compatibility breaking release. Be sure to read the change log notes for 0.19 through 0.19.7 before upgrading.
Release Notes: There is a major change to the Wiki class property $rules definition which breaks backwards compatibility with 0.7 alpha and earlier for any user-defined rules. The $rules property is now an associative array ('rule_name' => '/path/to/classfile.php'). A bug where marked up numbers would sometimes be mistaken for delimited token numbers has been fixed. Rules are now loaded in the constructor method, not on-the-fly as part of the parse() method. This corrects the "can't parse twice" bug. There are many other bugfixes and feature additions.