Underrated/missed change from Dima Fatko to basecamp/marginalia:

https://github.com/basecamp/marginalia/commit/226f93234b0ca58f548c5af23e229bdf3bf15ad5

I've profiled the previous version using caller and felt that capturing line numbers were too expensive as a result. caller_locations is a new-ish API and this change would make a big difference!