v0.2.0

• Added wetted area, projected area, span and aspect ratio functions and attributes to LiftingSurface class
• Geometry build method for all classes in now contained in their Build method
• Any classes deriving from AirconicsShape will now call 'Build' on construction
• Optional suspension of geometry creation using 'construct_geometry=False' in AirconicsShapes
• Migrating '__' hidden attribute to single underscore '_' (name mangling not useful)
• Lifting surface functional parameters are now properties
• Adding several other LiftingSurface parameters as properties
• Updating geometry parameters in LiftingSurface e.g. ChordFunct, SweeptFunct, ScaleFactor, NSegments etc., will result in rebuilding the geometry
• New Fit_BlendedTipDevice in lifting surface class (with examples)
• Added 'airfoilfunct' decorator for simplifying user defined spanwise airfoil functions: see examples/core/liftingsurface_airfoilfunct_decorator
• Topology class now mirrors components around a mirror plane on calling Build
• Multiple Jenkins/Conda and CI improvements