There are many ways to get involved with the project. If you have a new and exciting feature, or even a simple bugfix, simply fork the repo, create some simple test cases, generate a pull-request and give yourself credit!
If you've never worked on a GitHub project, this is a good piece for getting started.
Free use of this software is granted under the terms of the GNU Lesser General Public License (LGPLv3). For details see the files COPYING included with the distribution.