Dependency

Hi,

I would like to try out your library, especially the interpolation and linspace parts.
I would like to link this library to my own project or embed it such that I would not need to link it, i.e., compile it when I build my static library. I was wondering if it was possible to remove the cfitsio dependency?

No files or tests are named. Begin by locating how cfitsio is required when building the library and whether the interpolation and linspace routines can be built independently; done means those routines can be linked without cfitsio while the existing build remains functional.

Written by the indexing model from the issue text.