More Pandoc support!

[robinrosenstock]

@jonschlinkert I know you don't like the idea of incorporating pandoc's markdown flavor into your packages (#128),
but how else is it possible to do proper syntax highlighting for sublime without the base markdown from your package?
I therefore would like to add some pandoc support and especially some pandoc-crossref for writing some (academical) textes.

I have done something already. And I will now do some pull requests in this regard.

[robinrosenstock]

pull request #170 includes:

• figure reference
• section reference
• equation reference
• table reference
• table-caption and table label
• equation label
• link_attributes for figures and figure label
• section label
• citations

[j9ac9k]

as someone that also works in the academic space, and loves Markdown Extended; having more pandoc support would be great. Only thing I can offer is a +1

[robinrosenstock]

Notice that there is PandocAcademic, which throws some functionality together, among a pandoc syntax. Though, I'm not sure if PandocAcademic supports pandoc-crossref syntax.
Besides, I think this is not the ideal approach, because there are too many redundancies involed. The normal markdown must be first supported, together with coded fenced blocks.

[fhchl]

Is this feature planned to be merged? Would love pandoc support as well.