You can reach me with my G-mail, with the user name part same as here above.
How does such "adoption" go? Is it in the form of:
1. Extension mod (a required dependency on Schall Oil Fuel)?
2. Additional lines (wanting me to add those code into Schall Oil Fuel)?
3. Rewrite (not loading Schall Oil Fuel as requirement, but using some part of my code)?
4. Inspiration (similar concept, but you completely write your own code)?
If case 1, you do not need any permission at all! Your extension mod will load my mod after all!
If case 2, please let me know what to add and send me the code.
Case 3 is not good, however. You can do whatever in your private copy, but not uploading it to public.
If case 4, it is certainly welcomed. Some of my mods (like Schall Lamp Contrast) belongs to this category. Usually giving a line of credit in the description page is nice enough to the author.