request to add query optimization

[zabano]

Hi Colton,

Thank you for developing this great package. I am very grateful.
Would it be possible to add some query optimization to the get_collection (and get_resource) method based on the included resources? for example, i added the following code to line 621 of serializer.py.

for local in include.keys():
  if local:
      loader = joinedload(local)
      for remote in include[local]:
          if '.' in remote:
              for r in remote.split('.'):
                  loader.joinedload(r)
          else:
              loader.joinedload(remote)
      collection = collection.options(loader)

Thanks,
Omar

[ColtonProvias]

Definitely! I'm a fan of optimization. I noticed one fork of this project even has caching within get_collection and I want to implement that as well.

(Note to self on location of joinedload in SQLAlchemy: http://docs.sqlalchemy.org/en/latest/orm/loading_relationships.html#sqlalchemy.orm.joinedload)