+ *
+ * Tangent lengths calculated by the "Segment Tangent" and "BLine
+ * Tangent" ValueNodes were scaled by a factor of 0.5.
+ *
+ * 0.4: svn r1856
+ *
+ * Stop scaling tangents by 0.5.
+ *
+ * 0.5: svn r1863
+ *
+ * Added "offset", "scale", and "fixed_length" links to the
+ * "BLine Tangent" ValueNode.
+ *
+ * 0.6: svn r2067
+ *
+ * Added "scale" link to the "BLine Width" ValueNode in svn r1872.
+ *
+ * Added "loop" link to the "Gradient Color" ValueNode in svn r1901.