As with all OpenSource projects, it is easy for you to help or advance WebCleaner.
The easiest thing is probably sending me URLs of web pages that do not work correctly through the WebCleaner proxy.
If you want to implement a feature you need for yourself, here are some suggestions that might be helpful on a UNIX workstation.
You will need additional software packages to work with the WebCleaner Subversion repository:
Instructions to pull the Subversion version are at the WebCleaner Subversion repository page. The quick way is to run:
svn co https://svn.sourceforge.net/svnroot/webcleaner/trunk/webcleaner2 webcleaner
After checking out the Subversion tree, run ./autogen.sh to generate all the Makefiles. Then run make localbuild to compile a local version. To start the proxy run scripts/startdev.sh config.
When you want to send me patches, try to make them against the latest released version or the Subversion repository. For example you can use cvs diff -u > mypatch.diff to generate a CVS diff.