* a bit of minor refactoring
* create API function to get experimental torsion bonds
* put the torsion index in the dictionary
in this case it's silly to return tuples to python
* allow passing an EmbedParameters object from python
* capture the torsion index too
* add an atomIndices component
we should typedef the torsionBonds type
* test torsion index
* changers in response to review
* changes in response to review
* fix merge mistake
4eabb532e8