1.1.0

This release introduces:

• Add the ability to easily extend the Id class to create custom value object per entity (like ProductId, CustomerId, etc).
• Introduce the IdInterface.
• Add support to Symfony Serializer with a Normalizer/Denormalizer class.
• Adds FreezesUuidTrait to help on tests.
• README: fix typo on the configuration section + add examples for the new features.
• improve some unit tests.