We have decided to rename LivingMarkup to PHPMarkup to better reflect the purpose of the library. To be honest, this is the third time we have had to renamed the library (formally LivingMarkup was known as PXP).
We hope PHPMarkup better conveys the purpose of the library. In the same way that PHP is interpreted into C to allow developers to write powerful applications, PHPMarkup is a library that allows curators to use markup to safely instantiate PHP classes and invoke methods.
Other than that, PHPMarkup has become a relatively stable library. It is actually amazing how well it helps us run sites and minimize the code we need to maintain.