The WAF-FLE code can be checked in GitHub: https://github.com/klaubert/waf-fle/
Contribute, submit your code with enhancements and fixes. Make the WAF-FLE yet better.
All accepted contribution receive the credit in ChangeLog file, and can be tracked on github history (Pull request/closed).
By now, checkout the code from branch 0.7.0-devel (where current fix and development are happening), make your pull request to this branch to send your code.