I am remaking my site with Jekyll. On my site, I host my apps. On the page for the app, I have a changelog. Right now, they are a series of hard coded unordered lists. They are in the following format:
Version number
My question is, how can I implement a changelog using Jekyll? Can I use a collection for this? If so, how? I’d rather not have to make a new hardcoded unordered list list every time I update my app if there is a better way.
I use GH issues for this, and then some JS on the changelog page of my website.
The JS pulls in the GH API feed for a specific label and displays them. This way all I have to do is make an issue in GH with the changelog label and it automagically appears on the websites changelog page.
It was pretty easy to do, even used a JS library to convert the feed which I think is markdown into html.
Here is that site - both the changelog and the Issues pages use the same idea but with a slightly different layout.
For ideas how to do that, I would suggest you to look at Edition template by CloudCannon (https://github.com/CloudCannon/edition-jekyll-template). Very simple, easy to use & understand… Also, if you need more insights how it is run live, check out CloudCannon’s documentation on GitHub (https://github.com/CloudCannon/documentation).
Folks at CloudCannon deserve a lot of credit for putting together such fine Jekyll template in open-source domain! 
Hope you will find it useful.