| Changelog for ref | 
                                    
                        | Release | What has changed? | 
                                            
                                                    
                                | 0.6.0 | Changelist: - Drop PHP < 7.2 support (BC-breaking);
 - Enforce object typehint (BC-breaking);
 - Drop windows support (BC-breaking);
 | 
                                                                    
                                                    
                                | 0.5.0 | This release fix bugs, drop unused feature and soon to be EOL PHP 7.0 (see http://php.net/supported-versions.php for details). 
 Changelist:
 - Drop PHP < 7.1 support (BC-breaking);
 - Remove array notifier in a favor of callback (BC-breaking);
 - Remove references comparison (BC-breaking);
 - Fix bug when object handle reused but previous state was not clean;
 - Fix wrong behavior when reference get deleted during notifier call;
 - Fix memleaks;
 | 
                                                                    
                                                    
                                | 0.4.4 | This release improves PHP 7.2 compatibility support 
 Changelist:
 - Restore original referent obj handler when it is no longer tracked
 | 
                                                                    
                                                    
                                | 0.4.3 | - add PHP 7.2 compatibility support (Remi Collet <remi@remirepo.net>) | 
                                                                    
                                                    
                                | 0.4.2 | This is a maintenance release which drops PHP < 7.0.3 support. | 
                                                                    
                                                    
                                | 0.4.1 | - fixes problem when false Ref\NotifierException thrown during object destruction if non-caught exception was thrown before such destruction (outside notifiers and referent object destructor) (#17);
 - do not call soft notifiers if original object was prevented from being destroyed in one of notifiers (#18).
 |