0.4.0

Changed

• Add "path" variable to parse function signature
• URDF paths are no longer resolved relative to the package path
• parse function signature changed
• parse returns the robot now
• meshLoadCb and fetchOptions have been moved into an options argument object
• Moved all fields from Object3D.urdf to the object itself
• Changed type to jointType

Added

• Add isURDFRobot, isURDFJoint, isURDFLink fields to the robot, joints, and links
• Set the type field of the Object3D to URDFRobot, URDFJoint, and URDFLink

Removed

• node field from the urdf info on joints, links, and the robot