There is no point forking repo and making your changes in your own for and forgeting about them. This small app can benefit from your contribution, so, please make PRs, I will accept them as my time permits (1,2 days).
If you have enough time and resources, it would be great to wrap this app and place into brew, there is a branch in the repo for it.
vim or emacs is the best tool to code for this repo.
If you made changes to the file, please use vim commands gg=G to format the code. This will make it consistent.
Thank you for your contribution!