v0.6.0

• Introduce Async Standalone Server
• Add all() method to repository
• Introduce Cache Port into Protean
• Introduce View elements into Protean
• Add support for add_* and remove_* methods for HasMany relationships
• Enhance Entity.to_dict() to output fully-formed JSON
• Fix HasOne issue with updating an item
• Fix HasMany issue with updating items within UnitOfWork
• Refactor ContainerMeta class to be generic for all elements
• Introduce Makefile with useful test/development commands
• Remove order_by from EntityMeta options
• Validate for Repository's database meta value
• Make ValueObject's aggregate linkage optional
• Allow specifying associations with simple Class Names (instead of FQDNs)
• Refactor field class and remove unnecessary attributes (value, label)
• Validate for unique values on saving Entities
• Introduce Docker Compose for all services
• Upgrade SQLAlchemy to support >=1.4.9
• Upgrade to Elasticsearch 7.13.0
• Support case-insensitive match in Elasticsearch
• Ensure compatibility from 3.7 to 3.10
• Migrate to Github Actions from Travis