I made a small pull request to move and rename code from it being in `(compounds)` library to `(srfi 222)`. I don't know if it's a requirement, but I think it was an oversight we didn't rename it this way previously anyway. My motivation ultimately is for testing other pre-srfi code -- I think it's convenient if a test script (eg. through Dockerfile) can simply git clone a srfi repo and not need any extra transformations (such as renaming) to include the library therein.

Arvydas