Naveed Usmani

Hi @rockymeza, thanks for your response. I have added the test for protocol in `test_parsing`.

If the solution is to have additional check [here](https://github.com/ethz-asl/grid_map/blob/master/grid_map_ros/src/GridMapRosConverter.cpp#L279) (which makes value = -1 if it's less than zero), I can open a PR. or a better solution?

The output of `iwconfig` differs from driver to driver, so parsing the output requires considering different fields. Running your program gives the following error at my system: ``` [ERROR] [WallTime:...

`iwlist wlan2 txpower` gives: `wlan2 unknown transmit-power information.`

Also you can notice the difference in output of `Signal Level`. One is in dBm and other is x/100.

@davetcoleman the one generated by following [this tutorial](http://docs.ros.org/kinetic/api/moveit_tutorials/html/doc/setup_assistant/setup_assistant_tutorial.html) is a bit different from [davetcoleman/pr2_moveit_config](https://github.com/davetcoleman/pr2_moveit_config). One difference, as @canktech mentioned, is arms specified as chain vs. set of joints. Other minor...

@Jibrangit the demo: http://docs.ros.org/en/melodic/api/py_trees/html/demos.html#id1 is for py_trees version 0.6.9 and for that version the demo code works fine as in the readme. i.e. `py_trees.Status.SUCCESS` is valid because it is [exported](https://github.com/splintered-reality/py_trees/blob/release/0.6.x/py_trees/behaviour.py#L25).

I have submitted the recipe https://github.com/conda-forge/staged-recipes/pull/28727 to conda-forge repo.