- Write the children PID into specified pidfile (fixes #257).
- Fix double free on idmef_criterion_value_t cloned regexp object (thanks to Helmut Azbest <helmut.azbest at gmail.com>).
- Allow Python thread to run, while entering libprelude C function.
- Return PRELUDE_ERROR_ASSERTION when API check fail, in place of PRELUDE_ERROR_GENERIC.
- Make prelude_plugin_unsubcribe() work as expected (call the plugin instance destroy function).
- Various bug fixes, minor enhancements.