Computation times

00:03.289 total execution time for 4 files from examples/scenario:

Example	Time	Mem (MB)
Execution statistics as a Gantt chart (plot_gantt_chart.py)	00:02.103	0.0
Store observables (plot_store_observables.py)	00:01.114	0.0
Create a DOE Scenario (plot_doe_scenario.py)	00:00.043	0.0
Create an MDO Scenario (plot_mdo_scenario.py)	00:00.030	0.0