:racehorse: reduce number of function calls

removed unnecessary build_schema_map
:white_check_mark: fix tests and pep8
:racehorse: reduce ogm function calls
add positional args to nosetest command

allows for things like --failed and so forth.
usage tox -- --failed
:racehorse: reuse cursor object
Merge pull request #1 from agrc/optimize-wqp

Optimize seeding