| Version | Message |
| 0.4.0 |
- Support for PHP 5.4+ - Fixed memory leak when assigning an object - Fixed crash when using SplBool::getConstList() on PHP 5.3+ |
| 0.3.0 |
- Support for 5.3 - Added new type (SplFloat) - Support for OSX |
| 0.2 | - Fixed support for PHP 5.1 |
| 0.1 | - Initial version |