If you have ideas, suggestions, problems or encountered a bug, please let me know, preferably by filing an issue at this GitHub repository.
If you want to delve into the code you will probably need some knowledge of Processing (Java library responsible for the rendering of the graph) or/and Java (UI, data-parsing and basically everything else). For the Java part you can look at Vhati’s version of FTL Profile Editor, of which a large part of the code of this project is based. Use Maven to compile the source code.