Why should this be included in the repository?
pandoc-crossref is a pandoc filter for numbering figures, equations, tables and cross-references to them. It's very useful for writing academic papers in markdown, see this article for an example of its usage (under: Adding and referencing sections).
Is it Open Source?
How many users will use this software?
All users who are using pandoc for writing academic papers and need to reference. Some of it is possible without this package but for example not referencing sections.
Link to source tarball/zip file
Version 0.3.3.0: https://github.com/lierdakil/pandoc-crossref/archive/v0.3.3.0.zip
Additional inclusion criteria:
pandoc-crossref depends on the haskell stack, most of which should already be present if a user installed pandoc. (i.e., https://pandoc.org/installing.html)