message: Use hackflight.h instead of core.h
diff: #include <stdio.h>
  #include <stdint.h>
  -#include <core/step.h>
  +#include <core/hackflight.h>
  #include <core/pids/angle.h>
  #include <core/pids/althold.h>
  #include <core/mixers/fixedpitch/quadxbf.h>
  +//#define ETL_NO_PROFILE_HEADER
  +//#include <Embedded_Template_Library.h>
  +//#include <etl/vector.h>
  +//#include <etl/numeric.h>
  +
  #include "../../Simulator/Source/MultiSim/sockets/UdpClientSocket.hpp"
  #include "../../Simulator/Source/MultiSim/sockets/UdpServerSocket.hpp"
  @@ -112,6 +117,7 @@ int main(int argc, char ** argv)
  // Reset PID controllers on zero throttle
  auto pidReset = demands.throttle < .05;
  + // etl::vector<PidController *, 10> pidControllers =
  PidController * pidControllers[2] = {&anglePid, &altHoldPid};
  // Run core Hackflight algorithm to get motor values
  