unexpected results inconvert RGB -> [DIN99d,DIN99dA,ADIN99d] -> RGB about colors.jl

[m-lohmann]

I worked on DIN99 (originally Glenn Sweeney) and implemented DIN99o back then... I’ll have a look at the DIN99d conversion.
Probably the intermediate conversion step to XYZ is causing the problem.

Found the culprit: Several errors, rotation in wrong direction, one wrong sign in function cnvt{T}(::Type{XYZ{T}}, c::DIN99d)

This is what you get now:

julia> convert(RGB,convert(DIN99d,RGB(1,0.5,0.0)))
RGB{Float64}(0.9999999224685044,0.5000001510720956,0.0)

Should be fixed now.

[hofmannmartin]

Thank you very much. Could you make a pull request for your patch?

[m-lohmann]

I thought I already had. Something must have gone wrong. I'll make a pull request as soon as I can.

Edit: Done