add __serialize and __unserialize

Add EnumNormalizer

Use method `to` instead of `get` to better consistent with opposite `…

Add DoctrineType to Readme

Allow id as a property for Enum::from

Allow put Enum instance for Enum::all

Simplify getReflectionProperty

[Bugfix] Remove direct usage of self::$properties as it can be not in…

Allow Enum::all() with any property values

Change Namespace