Release Name: 0.9.1

Notes:
This release simplifies naming for a lot of methods as well as fixing a few bugs. See the changelog for more.


Changes:
* WARNING: Renamed ObjectField#not_null to #not_nil, MapObject#mappedTypes to
  #mapped_classes, ObjectStore#get_all to #all, ObjectStore#get_db_bridge to
	#db_bridge, ObjectStore#get_max to #max, ObjectStore#query to #group_query,
	ObjectStore#get_subset to #query, ObjectStore#get_user to #user, and
	ObjectStore#get_users to #users. Removed ObjectStore#get_filtered,
	ObjectStore#get_objects, ObjectStore#set_db_name
* Fixed bugs in Query.infer, Query#and, Query#or, and
  ObjectStore::Cache#get_by_query in handling order_by, order_by_order, and
	limit clauses
* Fixed bug where DomainObject#commit did not update @original_values
* You can pass Query#limit either a Fixnum or a Range
* DomainObject#custom_mock can take either symbols or strings as hash keys