Support crossref with upcoming rmarkdown

[atusy]

The upcoming rmarkdown will use Pandoc's HTML raw attribute instead of preservation tokens (<!--html_preserve--><!--/html_preserve-->).
This will break our cross-referencing feature (rstudio/rmarkdown#1965 (comment)).
Fortunately, @jjallaire told me the workaround rstudio/rmarkdown#1965 (comment) .

(I'll try to make some time to work on this in December)

[davidgohel]

Thanks for letting me know. Don't worry, I'll do it, I am often working on it these days

[atusy]

Great. Thanks a lot.

[davidgohel]

The changes in 87121cf fix that issue.

[github-actions]

This old thread has been automatically locked. If you think you have found something related to this, please open a new issue and link to this old issue if necessary.