Hubot is excellent. It gives you tons of functionality out-of-the-box, and a framework for you to build on easily.
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It's a small thing, but I'm much happier with the output of --version in the latest version of difftastic.
It shows the release version number, the commit hash, and the commit date. This gives you a sense of the age of release, but you still have a reproducible build (unlike build time).
It also shows OS, arch and compiler, because those are common requirements in bug reports.
The Matter protocol is excellent for puns.
"Does it Matter? It doesn't Matter."
I've been playing with labels on my code blocks. Sometimes I have useful labels, other times it's just "Example 2".
It's also unclear exactly where I put the label: Inside the box? Outside?
Are there any docs sites that do this really well?