Misc queue from 2018 (sorry, lost sources) (#1037)

* Add stalagtite->stalactite

* Add staulk->stalk

* Add stawk->stalk

* Add stocastic->stochastic

* Add stran->strand

* Add strem->stream

* Add structer->structure

* Add stummac->stomach

* Add subconchus->subconscious

* Add subtrafuge->subterfuge