Comments
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This is the fusion of the 3 atomic blender addons from Blender 2.79:

    1. PDB (I/O addon for .pdb files, was in trunk before)
    2. XYZ (I/O addon for .xyz files, was in contrib before)
    3. Utilities (panel for modifying atomic structures, was in contrib before),

into one single addon called ‘Atomic Blender PDB/XYZ’.