don't import Markdown in 0.4

[hayd]

fixes #28

There's still one issue with using help e.g.

julia> import Lexicon

help?> Lexicon  # expect to print README
search: Lexicon

INFO: Parsing documentation for Docile.Interface.
INFO: Parsing documentation for Lexicon.
INFO: Parsing documentation for Docile.

Note: actually also [text][ref] syntax isn't supported yet, and I was getting an EOF error with your Lexicon's readme file (will see if I can reproduce...).

[MichaelHatherly]

Thanks @hayd. I think it would be preferable to not need the try catch block for this.

@one-more-minute are there plans to backport the work that's been done in Base to Markdown.jl? If not we could just pull in all the markdown-related code from Base and not require Markdown.jl – I'm fine with either option.

That EOF error from trying to display the readme is probably the reason I didn't get round to supporting automatically displaying a package's readme, if I remember correctly. Shouldn't be much of a problem getting that working once we resolve the EOF error.

[hayd]

@MichaelHatherly The only other thing is named links, which aren't supported in Markdown yet (but I think they are part of the commonmark spec).

Yeah the try-catch is a band aid... I was surprised this was needed as BlockCode is no longer in Markdown.jl repo (is it just past due a release)?

[MichaelHatherly]

Yeah, looks like a new tag would be enough. After that just isa(block, Code) would be sufficient and setting the minimum version of Markdown.jl in the REQUIRES file correctly.

[hayd]

Shouldn't be much of a problem getting that working once we resolve the EOF error.

As mentioned over at julia, the EOF issue is fixed in master :)

(This PR is still waiting on the Markdown tag release... and me removing the special casing.)

[MichaelHatherly]

Until Markdown.jl is tagged I've backported the code from Base to deps/Markdown and added a conditional import for it. Once a tag is made I'll move back to requiring the package.

Ref: 1109796