Implemented Joins, but not join expressions yet, only joins in our Id fields, but its working for Left, Inner, and ManyToMany joins.
Finished overloading extension methods to accept a mapper.
Did some performance optimizations in the AutoMapper... it's still slow, but it's now definately fast than it was before.
Made the DbReaders for sqlite, and sqlserver use the same Dictionary for caching a hash of field names.