rewrite wait_for_move, split robot file, check test_all.py

urx/__init__.py

@@ -4,4 +4,10 @@ Python library to control an UR robot through its TCP/IP interface
 __version__ = "0.9.0"
 
 
-from urx.robot import Robot, RobotException, URRobot
+from urx.urrobot import RobotException, URRobot
+
+try:
+    from urx.robot import Robot
+except ImportError as ex:
+    print("Exception while importing math3d base robot, disabling use of matrices", ex)
+    Robot = URRobot