* Update WPILib to allow OpenCV 4 support
The existing version only supported OpenCV 3, OpenCV 4 support has been added recently
* Update wpilib port to allow opencv4
Was only compatible with opencv3, and would fail to build with 4.
Also had to update to include eigen, since we now depend on that as well
* Use test package to ensure PR passes
* Attempt to get mac working
* Revert to upstream repo