Added code to expose the persistence_diagram class, the bottleneck_distance function and the point class to python. Most of the commonly used methods for each class have been exported. The constructor for point now requires that a data argument be provided along with x and y coord. This needs to be made optional. The constructor for persistence_diagram could possibly be rewritten as well.

From: Dmitriy Morozov <dmitriy@mrzv.org>
Date: Fri, 10 Apr 2009 14:33:18
State: new
Subject: Intrusive containers for ZigzagPersistence
Message-Id: <e6f52c44ef26f4a7-0-artemis@cole>
category: efficiency

Use Boost's intrusive containers to store rows in ZigzagPersistence. This
should get rid of the inefficiencies associated with the simplex removal
(through ZigzagPersistence::remove()).