* Update rrt_star_reeds_shepp.py to fix#550
Add step_size attribute to RRTStarReedsShepp, and a method set_random_seed() to set the random seed, with two test cases.
* Update rewire() of rrt_star.py
Update rewire() of rrt_star.py to fix#550. Since the old version didn't assign path_yaw of edge_node to near_node, the old rewire() doesn't fit rrt_star_reeds_shepp.py
* Update reeds_shepp_path_planning.py
Limit the range of phi for the sake of planning speed, and simplify the the calculation process in straight_left_straight().
* Update reeds_shepp_path_planning.py
* Remove unnecessary cost calculation
Cost of edge_node is calculated in line 221, and self.node_list[i] is replaced to edge_node, so no need to update.
* Update reeds_shepp_path_planning.py
* Add optional robot radius to RRT/RRTStar path planners.
* update __init__ and check_collision to include radius
* during animation, if a robot radius is given then it is drawn
* Add test for robot radius
* Correct import error
* Correct missing robot_radius errors
* Address "expected 2 blank lines, found 1" error
* Address "line too long" errors
* Add missing argument description.
* Remove collision_check_with_xy and replace with check_collision
* Fix "missing whitespace after ','" error
* Update PathPlanning/ClosedLoopRRTStar/closed_loop_rrt_star_car.py
Co-authored-by: Atsushi Sakai <asakai.amsl+github@gmail.com>
Co-authored-by: Atsushi Sakai <asakai.amsl+github@gmail.com>
