It's fine to email me, I always like to hear suggestions - the address is kenny at this domain. You can also post meta comments on the contributor guidelines here:

https://golangnews.com/stories/1-contributor-guidelines

Or if you see a bug yes please log an issue on github. I have some changes queued up which haven't hit github or the website yet (need time to test them), so will be transitioning to a slightly different set of code soon, but contributions in the form of issues or bug fixes are welcome.