Release Notes: A divide-by-zero error when an attempt is made to find an intersection between two arcs with the same center point was fixed. An undefined variable warning for $last in the boolean() method was fixed. Protection against a divide-by-zero warning in the angle() method was added. A bug in the ints() function was fixed. The perturb() function was being called with uninitialized parameters. This caused incorrect clipping in cases where a vertex on one polygon exactly fell on a line segment of the other polygon.