Looking over the list of contributors on GitHub, it looks like 99% of the work is you. Have you thought about the ongoing governance of the project if you get hit by a bus / take a demanding job / loose interest / etc? Is there a logical successor?
Yes, this is indeed a problem I have been thinking about lately, especially as the scope of the project grows. However, there are already numerous passionate users who are contributing occasionally - what I need to do is probably empower them and give them more incentive to contribute. That's why I just started an open call for collaborators and already received 30+ applications so far. I'm hoping to build a team so that it's no longer just me :)