Deoldify Vapoursynth filter

[Dan64]

Fixed the problem regarding memory size. I attached the new RC3.
Now the initial preload is limited to 40 reference frames, the remaining reference frames will be loaded during the encoding.

I colorized a small clip with 2544 frames at a speed of 12.6 fps using max_memory_frames=50.

Your version is Okay, but are still missing the following changes:

1) in "SC min int", change the range in tool-tip: "Range [1, 100]".

2) the current tool-tip of "SC offset" should be applied to "SC min freq", the tool-tip to be applied to "SC offset" is:
           "Offset index used for the Scene change detection. The comparison will be performed,
             between frame[n] and frame[n-offset]. An offset > 1 is useful to detect blended scene
             change, range[1, 25]. Default = 2". 

Thanks,
Dan