Wrong symmetry operation for Hexagonal Low

[lekah]

There seems to be an issue with the hexagonal symmetry operations.
The fourth symop should have 0.5 as its 0,0 element, the line in the source code being:

EbsdLib/Source/EbsdLib/LaueOps/HexagonalLowOps.cpp

Line 85 in dc41bff

{{0.0, EbsdLib::Constants::k_Root3Over2D, 0.0}, {-EbsdLib::Constants::k_Root3Over2D, 0.5, 0.0}, {0.0, 0.0, 1.0}},

I compared with slide 50 here: http://pajarito.materials.cmu.edu/lectures/L3-OD_symmetry-21Jan16.pdf