title: Can you get all entities of a model in appengine and not a gqlquery
body: <p>I want a list of all my model entities. Model.all() returns a gqlquery. I know that I can then do list comprehension on the query and end up with the result I am seeking. Is there not a way already built-in saving the additional step of doing the comprehension? </p>
  
  <p>Or is everyone just subclassing and building the method in themselves?
  ... or is this a safety measure preventing us from accessing more data then we intended incurring costs?</p>
  
  <p>Thanks</p>