This PR updates the interpolation range for the airfoil surrogates. It also consolidates the read process of the airfoil polar data, and enables non-xfoil polar data to be read in from a text file with the requisite (alpha, CL, CD) column data.
Coverage decreased (-0.09%) to 90.222% when pulling 929cf8fc70011b85279a1cd46c32e31af9b09cf1 on feature-airfoil_polar_updates into e44e638a647749c7be8aed851901e0dd98001f38 on develop.
This PR updates the interpolation range for the airfoil surrogates. It also consolidates the read process of the airfoil polar data, and enables non-xfoil polar data to be read in from a text file with the requisite (alpha, CL, CD) column data.