RobotPy 2021 Upgrades

[virtuald]

Well, kickoff is tomorrow, so probably should work on this now? ;)

I'm planning on starting work on these things at 8PM Eastern Standard Time. Would appreciate any help people want to offer. Here's a list of the things I imagine need to be done:

• Documentation updates!
  • pip install robotpy needs to be our emphasized install method
  • robotpy installer needs to be upgraded (Distribute roboRIO wheels instead of ipks robotpy-installer#49)
    • ... sorta want to rename it to 'robotpip' :-D
  • Remove all mentions of 'download-opkg/install-opkg'
• Upgrades
  • core pieces of robotpy: wpiutil, ntcore, hal, wpilib
  • ctre, spark, navx
    • I belive CTRE/SPARK support OSX now? Need to add them to new builds
  • adi, others?
  • robotpy-build needs to update to pybind11 2.6.1 -- holding the version of robotpy-build to < 2021 until I finish the cxxheaderparser migration
• new libraries
  • wpimath
  • HAL websocket wrapper for ROMI support
  • WPILib simulation physics stuff? it might be in wpilib, haven't checked

Other things I'm tracking but won't be doable before kickoff

• commands v2 library needs robotpy-build upgrades to function
• playing with fusion venom controller: waiting for response from them wrt simulation

If you want to help out, get on gitter and tell me what you're working on! A lot of these things should be doable before tomorrow morning.