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 <morozov@cs.duke.edu>
Date: Wed, 06 Feb 2008 16:45:13 -0500
State: new
Subject: About section in README
Message-Id: <e6d9deee8fbd81a5-0-artemis@metatron>
Add "About" section to the README file.