Friday development status

This update shows that LR6 really has not that much new. I have most of the sliders running, even the complex ones like HSL that change assignment. The only really new piece is the brush in the gradient filter, but it doesn't ruin Paddy. The work a while ago with LR 5 did pay off. Now I need to test a few reset buttons, and then make sure everything works in the old process modes and for JPG, but good progress