Removing DQ_CoppeliaSim{ZMQ} included headers.

[FrankaEmikaPandaVrepRobot] Adding class.

Date-based version bump.

[setup.py] Updating versioning strategy to consider the master branch…

… as alpha releases.

Initial commit of version 20.04

Main changes
  * DQ: Improved to_string() to be more similar to MATLAB.
  * DQ_SerialMainpulator: removed support for dummy joints.
  * Added DQ_SerialWholeBody.  This class represents the serial connection of robots.
  * Added DQ_SerialManipulatorDH. This class represents serial robots modeled using DH parameters and can consider prismatic joints.
  * DQ_Robots: changed most serial manipulator robots to use DQ_SerialManipulatorDH instead of DQ_SerialManipulator. Changed KukaYoubotRobot to use DQ_SerialWholeBody instead of DQ_WholeBody.

Same as CPP v19.10.1

Initial release of the modern DQ Robotics

New vrepinterface

Included DQ_Kinematics

First version using setuptools-git-version