Model._fields now tracks fields
Model setattr now uses _fields
Model getattribute now uses _fields
Abstracted register logic into database.register_model, abstracted creation of worksheets to get_or_create_worksheet
Merge pull request #1 from Widdershin/local-fields

Local fields
Super dirty implementation of write safe instances, and model.get_instances(). model.commit() must be used to save writes now
Removed some debug messages
Merge pull request #2 from Widdershin/model-instances

Model instances
Merge branch 'master' into mockdb

Conflicts:
	fuckitdb/fuckit.py
	tests/test_model.py
Abstracted model data calls to database methods
More work on MockDB
Added row_values() and get_all_values() to DB
Completed MockDB functionality, all tests passing
Consolidated tests to tests.py
Removed erroneous import and added line before cell class for pep8
Merge pull request #3 from Widdershin/mockdb

Mockdb