uberSpark is always open to contributions. Please follow the following guidelines to submit features, additions and discuss issues.
Visit https://forums.uberspark.org and discuss the features and/or additions with fellow developers.
Once an agreement is reached regarding the proposed feature and/or additions, the easiest mechanism is probably to fork the uberSpark git repository through the web UI, make the changes on your fork, and then issue a pull request through the web UI.