Rotations appear to be counter clockwise?

[alkirkby]

I think rotations are being applied in the wrong direction (counter-clockwise).
When I rotate my site by -(angle) I get the same result as if I rotate by +(angle) in geotools.

The rotation matrix given in utils.calculator.rotate_matrix_with_errors is:
[[cos(phi) -sin(phi)]
[sin(phi) cos(phi)]]

but in Simpson and Bahr it is:
[[cos(phi) sin(phi)]
[-sin(phi) cos(phi)]]
to rotate a coordinate clockwise from north (+x).

[kujaku11]

@alkirkby You're correct, I don't know how this got changed to counter-clockwise. I feel like we do this about once a year. I'll work on the fix. PR #57