[Fluxus] Rotation Matrix issue

[gabor papp]

> It looks like the rotation matrix math in dada.h is inconsistent; and
> the signs on the sins need to be flipped for the y-axis.
this seems to be right. nice catch. could you submit this as a bug please?

> I'm gonna make the change locally. This is an interesting one, since
> people probably depend on the existing behavior - 
i don't think this is a problem. this is the case with the planes and
the flipped texture bugs also.

best,
gabor