engforge.test

`test_airfilter`	tests airfilter system operation by solving for airflow between filter and and fan
`test_analysis`
`test_comp_iter`
`test_composition`
`test_costs`	Testing of costs reporting module - emphasis on recursive testing w/o double accounting on instance basis (id!) - emphasis on default / subclass adjustments
`test_dynamics`	test transient cases and match against real world results
`test_dynamics_spaces`
`test_four_bar`
`test_modules`
`test_performance`
`test_pipes`
`test_problem`
`test_problem_deepscoping`
`test_slider_crank`
`test_solver`
`test_tabulation`