Feature release - Added elliptic lenses for simulating circular or elliptical transparent objects - Added aspheric lenses with surfaces controlled by a user-defined functions - Added settings to adjust simulation parameters - Fixed critical bug where light wouldn't refract when exiting a lens - Fixed critical bug where light refracted at incorrect angles - Broke compatibility with earlier save file format, the default lens object type is now known as spheric-lens and its radii have been renamed from radius0/radius1 to radiusA/radiusB