Ask HN: Developer Specific Browser Stats?

Hey everyone - does anyone know if there are any good resources for browser share, specifically amongst developers and devops? We're working on a web app which is a part of a larger set of devops tools, and while I have some ideas (probably latest(ish) of everything, probably lower IE usage than globally, etc.,) I want to make sure I'm going off of data and not just assumptions, especially considering that some of the things I'd like to use is hard to find fallbacks for (new flexbox, gah) and will be no goes if it's more than a handful.

I found a bunch of stats from SO, which is sort of what I'm looking for, but the latest I could find that they've published is 2010.

Any help is massively appreciated!