Contribution

If you have improved/added some routines or have fixed some bugs you found in the source code, please, create a patch and submit it using the patch manager interface at SourceForge.
Note that you will need to register with SourceForge, and you will need to login before submitting a patch, or else the 'Submit New' link will not appear.

PS: If you have problems using the patch manager interface, then send your patch by email, but consider the first method as the preferred one (in fact it let other people to look at your work and avoids submitting the some fixes).