wip/py-ars 0.5b1 NetBSD

ARS is a physically-accurate robotics simulator written in Python. It's main purpose is to help researchers to develop mobile manipulators and, in general, any multi-body system. It is open-source, modular, easy to learn and use, and can be a valuable tool in the process of robot design, in the development of control and reasoning algorithms, as well as in teaching and educational activities