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 <morozov@cs.duke.edu>
Date: Thu, 21 Feb 2008 04:23:29 -0500
State: fixed
Subject: More elabroate domain in avida-landscape
Message-Id: <91986229a564f7e0-0-artemis@metatron>

Try minimum spanning tree (i.e., take only negative edges from avida-distance).
Try a combination: all edges up to a certain (realtively small) length + MST.