Cleaned up Python bindings to restore functionality:
* StaticPersistence is iterable, its nodes are usable (sign, pair, cycle)
* StaticPersistence knows how to map its nodes into Filtration indices
* moved PythonCmp into utils.h
* minor cosmetic changes
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()).