There is one already in the works. If you go to the Slack Community on Phantom-Community... go to the #appdevelopers channel and ask there... you should be able to get some direction on where the last version is. or just DM me @robphantom. We can get you the source code if you are a licensed Phantom Customer.
For the near-term, you might get quicker answers within the Phantom Slack community (phantom-community.slack.com). If you're not already a member you can signup here:
This is especially true for very Phantom-specific questions, e.g. you working on a Playbook.