v 1.60

This is a consolitation release with a bunch of smaller but nice enhancements and some refactorings inside the programm

Xoptfoil-JX

• More robust xfoil driver which reduces the situations, xfoil doesn't get convergence at an operating point.
• Auto-detection of curvature constraints especially when using 'Hicks-Henne' shape functions.
• Smoothing of the seed airfoil surface is now done automatically if the auto-detection of curvature signals too many 'spikes' on the surface.
• New screen output during particle swarm optimization to get more details about the success of each particle.
• Multi-threading is now always active also if show_details = .true.

Xfoil_worker

• Added new option -w set which allows to modify the geometry parameters like thickness, camber and their positions of maximum
• Added new option -w check to check the surface (curvature) quality of an airfoil and tell about best optimization options for the curvature.
• Added new option -w blend to blend an airfoil with another airfoil by xx%.

See changelog for more details