fixed dependencies

vendor/github.com/paulmach/orb/clone.go

@@ -0,0 +1,56 @@
+package orb
+
+import (
+	"fmt"
+)
+
+// Clone will make a deep copy of the geometry.
+func Clone(g Geometry) Geometry {
+	if g == nil {
+		return nil
+	}
+
+	switch g := g.(type) {
+	case Point:
+		return g
+	case MultiPoint:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case LineString:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case MultiLineString:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case Ring:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case Polygon:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case MultiPolygon:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case Collection:
+		if g == nil {
+			return nil
+		}
+		return g.Clone()
+	case Bound:
+		return g
+	}
+
+	panic(fmt.Sprintf("geometry type not supported: %T", g))
+}