Delete broken/obsolete h2dterms and l2dterms wrappers, and replace
with FMMLib-based expansion order finder Closes #39 - [ ] Point requirements.txt back to pyfmmlib master after pyfmmlib!15 is merged
with FMMLib-based expansion order finder Closes #39 - [ ] Point requirements.txt back to pyfmmlib master after pyfmmlib!15 is merged