0.5.3
- Fixed bug concerning weights (were rounded to integers).
- Improved documentation.
- Included an HOWTO on extending the current package.
- Fixed some minor bugs.

0.5.2
- Ensured that random neighbour selection works in O(1) rather than O(k), with k the average number of neighbours.
- Optimized the calculation of weight from/to community.
- Included some missing references.

0.5.1
Corrected some mistakes which prevented it from being properly used on PyPi.
No serious changes were made.

0.5
Initial release
