Merge pull request #165 from IIIF/addRangeRef

Adding RangeRef back to range

Author: glenrobson

schema/iiif_3_0.json

@@ -1149,6 +1149,7 @@
                                         ]
                                     },
                                     { "$ref": "#/classes/range" },
+                                    { "$ref": "#/classes/rangeRef" },
                                     { "$ref": "#/classes/canvasRef" }
                                 ]
                             }