Nearest neighbor tracker with gap-closing
Nearest neighbor tracker with gap-closing

This function does tracking of points over multiple frames, with gap
closing, based on the nearestneighbor frame to frame linker.
There are still improvment to makes and doc to write.
Signed-off-by: Jean-Yves Tinevez <17c1793fcc6179ec3ae6319887e209161427f317@gmail.com>

tinevez/jyt-matlab,tinevez/jyt-matlab,tinevez/jyt-matlab,tinevez/jyt-matlab,tinevez/jyt-matlab