Fixes cfl_spacing in chebyshev, which had been based on the number of local chebyshev points instead of the number of global points. Also fixes the flow_tools cfl test to evaluate the CFL after the second timestep, to align with the logic coded in flow_tools.py.
Fixes cfl_spacing in chebyshev, which had been based on the number of local chebyshev points instead of the number of global points. Also fixes the flow_tools cfl test to evaluate the CFL after the second timestep, to align with the logic coded in flow_tools.py.