Wrapped feedback always returns positive output when the shortest path is wrapped

[logos-electromechanical]

In the case where the wrapped feedback is set to true, the code should output the command that provides the shortest distance between the two points, even if it crosses the wrap point. The library currently returns the absolute value of the command. The error, at least in the CPP version, is on lines 185 and 189 of PID.cpp. It currently is:

else if(altErr1Abs < regErrAbs && altErr1Abs < altErr2Abs) //If altErr1Abs is smallest
{
  error = altErr1Abs;
}
else if(altErr2Abs < regErrAbs && altErr2Abs < altErr1Abs) //If altErr2Abs is smallest
{
  error = altErr2Abs;
}

It should be:

else if(altErr1Abs < regErrAbs && altErr1Abs < altErr2Abs) //If altErr1Abs is smallest
{
  error = altErr1;
}
else if(altErr2Abs < regErrAbs && altErr2Abs < altErr1Abs) //If altErr2Abs is smallest
{
  error = altErr2;
}

The error is also present in the C version, with nearly identical code on lines 156-161. I'll put together an updated version and make a pull request with the fix in the next couple of days.