Updates to the Shapely roadmap

Speaking of great Python packages for geoprocessing: the Shapely roadmap has updates. Version 1.0.13 will allow shapely to be imported in py2exe apps. The work on a framework for use of geometry engines other than GEOS that I'd been calling 1.1 is now raised to 2.0. Use of prepared geometries and the re-entrant geos_c API in GEOS 3.1 is planned for Shapely 1.2.0.