Sean Gillies <sean.gillies@gmail.com>

* Initial effort and basic API design based on QGIS' usage of libspatialindex C++ APIs

Howard Butler <hobu.inc@gmail.com>

* libspatialindex C API
* rewrite to use ctypes and libspatialindex C API
* Streaming/bulk loading support
* Disk serialization of indexes
* Pickle serialization and clustered index support
* .count() and .intersection() methods
* Windows support
* Node fetching
* Index property access 

Brent Pedersen <bpederse@gmail.com>

* Pickle protocol support
* Documentation, doctests
* Variable coordinate ordering
* Testing

Matthias <nitro@dr-code.org>

* Custom storage API (both Rtree and libspatialindex)