Is there support for Many-to-Many relationships?
By using MList you can easily make many to many relationships. The primitives defined in Signum.Entities can be combined in many ways. Nested EmbeddedEntities, Lites, MList of Lites, MList of values, MList of Entities, MList of EmbeddedEntities… there are a few forbidden ones however, like nested MList, or MList inside of an EmbeddedEntity.