Released version 3.1.0
- requires PHP 7.2
- added UserStorage, successor for IUserStorage
- added IdentityHandler
- added Authenticator, successor for IAuthenticator
- added SimpleIdentity, successor for Identity
- removed I prefixes from IAuthorizator, IResource, IRole
- SecurityExtension: 'roles' & 'resources' are deprecated
- User: added method refreshStorage() to clear identity cache. (#46) (#50)