fix for LaTeX Error cslreferences undefined

[LDSamson]

Hi Leon, Thanks for making this template! I am trying to adjust it for a Groningen university thesis. I came across this error regarding csl references after upgrading to the latest Rstudio (v1.4). This change in the template fixed it for me. Please check it yourself before accepting, my Latex knowledge is limited.

The error occurs in pandoc v2.8 and higher, due to a change in pandoc and its standard .tex template. See also ismayc/thesisdown#79 (comment)

[lcreteig]

Hi LDSamson,

Many thanks for reporting this and proposing a fix! Sorry for not coming back to you sooner.

I tried your change out with pandoc 2.8, but it still threw an error. Perhaps your version of RStudio comes bundled with an even newer version of pandoc? You can find this out with rmarkdown::pandoc_version().

I slightly modified your version according to the fix in rstudio/rticles#335. It should work with all pandoc versions now, but it would be great if you could try it out and confirm that everything still works fine on your end. Then I can merge the PR.

[LDSamson]

No problem, thank you for making this template in the first place. I indeed have a newer Pandoc version (2.11.2). My proposed fix was probably not backwards compatible. I expect that your modifications will work; I will try it out this week and let you know

[LDSamson]

Yes, I tested it and it works fine now with Pandoc 2.11.2!

[lcreteig]

Great; thanks again!