Improvement ideas

[vshymanskyy]

• Add Closest(target, e1, e2) operator
• Allow operators to transform XY
• Review all operators not to "erase" the complexity of child nodes
• Use some Palette instead of random colors
• Pick colors based on contrast?
• Switch to HSV model
• Add Perlin Noise operators
• Add Fractal/Recursive operators
• Add an option to animate the image based on time/accelerometer data? 😁