Updating Documenter.jl to a more recent version?

[dom-linkevicius]

Motivation and description

Hi,

I'm documenting a package via Documenter.jl and want to refer to a few functions in NNlib.jl via @extref. However, because Documenter.jl in NNlib.jl is fixed to 0.27, it does not generate an inventory file and this causes issues in using @extref. Is there any particular reason why Documenter.jl is fixed to 0.27?

Possible Implementation

I've a local branch of NNlib.jl where I've updated the Documenter.jl version, commented out one missing docstring (∇upsample_nearest) that makes the doc build error and have a working solution. If this is of interest, I can open a PR.

[mcabbott]

Sounds great, I presume nobody got around to updating it.

[CarloLucibello]

closed in #578