v0.17

This release is full of breaking changes preparing version 1

new features

• the new kinematic solver, much more convenient, precise, robust and powerfull than the previous one. Coming with plenty of functions and kinematic joints
• the Ellipsis primitive type
• the settings module now contains a dictionnary of standard colors for displays and parts, meant to follow themes
• added functions circular_screwing and grooves in madcad.standard
• added functions helix and screw in madcad.generation

breaking changes

• many hashing functions in madcad.mesh have been moved to madcad.hashing
• Axis and isaxis have been moved to madcad.mathutils
• thicken and inflate have meen moved to madcad.offseting
• madcad.cut was renamed madcad.bevel and had few API changes
• previous color values present in madcad.settings.display have been moved to the new madcad.settings.colors