Wpilib

This fixes an issue in the prior release zipfile that had the wrong version of pynetworktables in it (see https://github.com/robotpy/robotpy-wpilib/issues/248).

This fixes two bugs in the original RobotPy release:
- [246](https://github.com/robotpy/robotpy-wpilib/issues/246) The installer did not work properly on systems without an ssh configuration file, or on Windows
- [243](https://github.com/robotpy/robotpy-wpilib/issues/243) Robot code would fail at system start due to a bug in the python 3.6 random module (thanks to auscompgeek for finding the fix!)

All RobotPy users should upgrade to this latest version of RobotPy.

It's a little late, but we're happy to announce the initial release of RobotPy for the 2017 season. This release contains most new changes for WPILib in 2017. Here's what this package provides you:
- Python 3.6.0 interpreter for RoboRIO
- WPILib/HAL packages for RoboRIO
- [pynetworktables](https://github.com/robotpy/pynetworktables) and [robotpy-wpilib-utilities](https://github.com/robotpy/robotpy-wpilib-utilities)

This release will only work correctly on a RoboRIO that has been reimaged for the 2017 season.

There's a couple of important things to note here:
- Because 3rd party drivers are now being supported separately from WPILib, CANTalon has been removed from this release. We will be releasing support in a separate library hopefully within a few days.
- pynetworktables has been rewritten based on the ntcore library, and it should support all of the new cool things that ntcore supports
- The HAL changes in WPILib this year mean that:
- CPU usage should be significantly less than it was last year (observed 4-10% idle usage, compared to 20% last year)
- Tests should run a lot faster (I've seen 50% improvements on basic tests
- CameraServer has been removed for now. We will have a python-compatible version of the new cscore library available in the near future, which should result in a significantly upgraded experience for image processing
- We've improved our test coverage significantly, so there's less chance of things breaking

Additionally, the [documentation site](http://robotpy.readthedocs.io) has been restructured significantly, so that all RobotPy projects essentially share the same set of documentation -- no more need to remember five different sites!

Thanks to everyone who contributed to this release, but particularly james-ward auscompgeek Twinters007 and ArthurAllshire

Installation instructions can be found on [our documentation site](http://robotpy.readthedocs.org), and are also included as a README file with this zipfile. We expect there to be some bugs at first as teams start playing with their new toys, so please [report them on our issue tracker](https://github.com/robotpy/robotpy-wpilib/issues) as you find them!

This is a minor bugfix release, and users are not recommended to upgrade unless they have an extra robot to test on. There are two issues addressed:
- Fixes a bug in match_arglist where positional arguments were accepted after keyword arguments. This fix may break existing code that inadvertently relies on this behavior
- Fixes an issue in TimerTask (used only by PIDController) where it doesn't raise an error if the specified period is <= 0, which can eat a lot of CPU

This fixes a hanging issue when running tests with a PIDController object. If you're using the PIDController object, you should probably upgrade.

Includes PIDController fix, CANTalon simulation fix, and slight optimizations (maybe 5% improvement) to the simulated HAL performance. Some hal-data control keys have changed.