Merge pull request #61 from hAdamm/as-development

Added feature of counting collection items without loading content
New events beforeConnectToOwner, afterConnectToOwner into property One
New events beforeConnectToOwner, afterConnectToOwner, beforeDisconnectToOwner, afterDisconnectToOwner into EntitiesCollection
Merge pull request #63 from lordjim666/dev

Added new events into property One and EntitiesCollection
Added clearing properties changes after insert or update of entity