The old test was sometimes saying that the toolbox was installed when it
was not. I do not know why. This seems more robust.

The functions rotx, roty, rotz are not built-in of MATLAB (wtf). Instead
they come from a very expensive toolbox. As none other function of this
toolbox are needed, the functions are reimplemented manually for Rotare
to remove that useless dependency.

This completes the work started in !4 by implementing the true
Reynolds recalculation for the other three solvers.

Note that special care had to be implemented in Stahlhut solver in order
to ensure proper numerical resolution of the solution.

fix(ElemPerf): fix wrong writting of properties

See merge request rotare/rotare!5

fix: set true calculation of reynolds number

See merge request rotare/rotare!4

calculate reynolds number exact value in indvel.m
use its exact value when possible, if not use an approximation in ElemPerf.m

Add upstream velocities

See merge request rotare/rotare!3

fix(config): fix caradonna use of airfoil polars

See merge request rotare/rotare!1