added fix in ColorDibFromElevation to catch the top-most heixel(s)
added fix in ColorDibFromElevation to catch the top-most heixel(s)

seanisom/vtp,markraz/vtp,nakijun/vtp,seanisom/vtp,seanisom/vtp,nakijun/vtp,seanisom/vtp,nakijun/vtp,seanisom/vtp,nakijun/vtp,markraz/vtp,markraz/vtp,markraz/vtp,nakijun/vtp,markraz/vtp