More metrics! Split "Hue" into "Hue (HSL)" and "Hue (Lab)". Split "Saturation" into "Saturation (HSB)", "Saturation (HSI)", Saturation (HSL)", and "Saturation (Lab)".
More orders! Started on AscendingThresholded and DescendingThresholded (incomplete). Added a threshold slider to the GUI.
Moved all color helper functions from RgbToLabConverter and Segment into ColorUtil class.
Fixed a couple threading issues in the GUI
Adjusted sensitivity of the "threshold" slider.
Finished implementing AscendingThresholded/DescendingThresholded orders.