are there any useful additions to docs in this branch? if not, close

[NickleDave]

looks like main idea was to add a note about annotation?

https://github.com/NickleDave/hybrid-vocal-classifier/tree/add-annot-to-docs

but I'm about to make crowsetta a dependency to handle annotation, which would make this misleading

not totally clear on the intent of some of the other commits -- re-structuring of tutorials page doesn't actually look that useful