EMTKD - inconsistent pattern rotation

Hi,

I have found an issue in EMTKD - incorrect rotations of the beam intensity.

At first, I was not sure what is the correct convention for the sample tilt - I would use -20°, Wiki tutorial on TKD says +20°. Anyway, I produced both masterfiles for alpha-Ti with [EMMCfoil.txt](https://github.com/EMsoft-org/EMsoft/files/5386145/EMMCfoil.txt), changing only the _sig_ to +/-20°, processed through EMTKDmaster and plotted using EMTKD with [EMTKD.txt](https://github.com/EMsoft-org/EMsoft/files/5386154/EMTKD.txt) (for simplicity - pattern centered on detector) as a series with detector tilt from -70° to 110°. The (0001) basal plane of Ti is parallel with the foil, Euler angles (0.0, 0.0, 0.0). Orientation of the patterns is the same as when viewed by HDFview.

Now, the Kikuchi pattern seems to be rotated correctly, while the dark band, which I assume is an intensity singularity in the foil plane, is moving in an opposite direction. (It could actually be the opposite way, if I got the pattern orientation upside-down - intensity would be rotated correctly and master pattern not.)

Source code version : 5_0_20201010_ (Win64 build)