GitHub issues burndown chart & survival analysis

Hello, thanks for providing this dataset!

Not sure if this is the right place to post, but I used it my [Observable notebook](https://observablehq.com/@stas-sl/github-issues-survival-analysis) to analyze how long do issues "live" and to create some "burndown" charts.

After playing a bit with Observable + ClickHouse, I found it to be a great combo for performing and sharing such explorations.

Here are some charts for ClickHouse repo: