gradient process ideas and suggestions

• point management should be consistent with other processes, i.e. at least from a menu on right-click (and potentially in better ways, see #481)
• IMO the first point should be based on the color value of the first state, and the last point on the one of the end state
• when adding a point it should query the current value of the associated address if there is one
• when choosing a color from i-score's color picker it should be output (ideally it would be great if the color be output continuously when moving the "target" of the color picker
• it would also be very very cool that a gradient be created when 'interpolating states' or creating a sequence (see #480)
• add a (0. to 1.) curve, such as in interpolations between each point pair, in order to change the 'transition' shape between two color values
• not sure about this, but maybe there could be more advanced ways to interpolate between colors (I'm thinking about duration's "color palette" for interpolation) - not for next month, I guess, but probably worth discussing

No files, tests, or entry points are named. Review the gradient-process requests and the referenced issues #481 and #480 first; the work is complete only after the desired subset of proposals is agreed and implemented.