title: AutoMapper AssertConfiguration at compile time?
body: <p>Is there any way to validate mappings at compile time? For example, I have an entity with many child entities. If I forgot to add a CreateMap for one of the childen when I try to map ParentX to ParentY the mapping will fail.</p>
  
  <p>I can't think of a way to validate this during compile but I'd love to find a way.</p>