Negative Direction values in Station Files do not throw an error, but end up always treated as 0 values.

[latwood]

Not sure what the appropriate behavior is here, maybe we should just wrap them around to the closest 0 to 359 degree value instead of throwing an error, but treating them as 0 without explanation seems like a bad idea.

Found this while testing diff_angle print statements in PointInitialization, for the angleFromNorth calculations, I was trying to trick it into a value where the calculations would wrap around 0 from each direction. And -28.0/-5.0 is NOT 0.0, I had to use 360.0 - 28.0 = 332.0 for the calculations to come out to my desired 0 wraparound value (my angleFromNorth value was ~-28.0).

[nwagenbrenner]

We should not allow negative values for wind direction. We should throw an error. This could be handled in the error checking that takes place when the station file is read in or later when we check input values for validity (e.g., somewhere we have a check for max wind speed, etc.).