License
Rudiments is covered by the GNU LGPL 2 and is thus generally free to use and distribute, by itself, as part of a free software project, as part of a commercial system, or otherwise.
Distribution of Modified Versions
The LGPL license requires that if a modified version of software covered by that license is distributed, then the modified version, including source code must also be released under the same license.
Contributed Code
Patches and other contributions are welcome. No copyright assignment or other assignment of interest is required.
For questions, please contact licensing@firstworks.com.