On Nov 29, 2023, at 9:39 PM, McGrath, Justin M <jmcgrath@illinois.edu> wrote:

Hi Matt,
It's been a while and I haven't heard from Mario. I tried a different email address I found on this CV, but didn't get a reply, and I can't find any contact information for Karsten Ahnert. Do you have other ideas about how to contact them, or could someone else step in as a maintainer?

Best wishes,
Justin

I found Karsten’s email and CCed him here. Hopefully he is willing to merge: https://github.com/boostorg/odeint/pull/58. As for fostering libraries I am not familiar with the process, but would be willing to step in if we continue to get no response.