Tests

Removed workers as argument #298

Job	Run time
test_base_models	56s
test_battery	52s
test_calc_error	56s
test_centrifugal_pump	1m 26s
test_composite	1m 1s
test_data_model	1m 43s
test_datasets	56s
test_dict_like_matrix_wrapper	1m 2s
test_direct	53s
test_ensemble	54s
test_estimate_params	1m 4s
test_horizon	1m 10s
test_linear_model	53s
test_loading	54s
test_moe	1m 13s
test_powertrain	1m 26s
test_pneumatic_valve	2m 45s
test_predictors	2m 39s
test_serialization	1m 9s
test_sim_result	54s
test_state_estimators	1m 7s
test_surrogates	2m 32s
test_tutorials	2m 7s
test_uav_model	1m 10s
copyright (3.9)	10s
test_uncertain_data	49s
	32m 41s

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