Support ConTeXt standalone

[andreiborisov]

👋🏻

I have trouble to make the package work with ConTeXt standalone distribution starting 2.15.0.

I'm installing the package the same way, however, compiles arbrubtly stop since 2.15.0 without any further issues printed in the log.

Any suggestions on what it can be or instructions for me to diagnose the issue further?

The issue seems to persist up to 3.4.0.