Small bugfix for printing an assertion. Also added a depth option to path generation.
Merge branch 'master' of https://github.com/goodmami/pydelphin

Pulling in documentation changes. Small bugfix set HEAD ahead of remote.
Merge branch 'master' of https://github.com/goodmami/pydelphin
Merge branch 'master' of https://github.com/goodmami/pydelphin
Reverting last change; turning napoleon off for RTD.