references in docs

[simonbyrne]

Would be nice if there was a way keep citations in a global bibtex file and have them rendered nicely in the docstrings.

See JuliaDocs/Documenter.jl#379, this discussion and the unregistered Citations.jl package.

[charleskawczynski]

For local references, this repo uses simple markdown, which looks nice!

[simonbyrne]

It does. I wonder if it works from in docstrings?