Deoldify Vapoursynth filter

[Dan64]

Released new version: v5.6.7

Main changes:

    Improved connection error handling in ColorMNet
    Improved extraction of reference images
    Added new API HAVC_SceneDetectEdges() with improved scene detection algorithm
    Extended API HAVC_extract_reference_frames() with 3 new algorithms:
       1: Advanced detection on the edges (best for smooth transitions),
       2: Scene detection using SCXvid plugin,
       3: Scene detection using MVTools
    Added management of new "_Range" property (ver. R74) since "_ColorRange" property was deprecated.

Dan