Jan Stanstrup

This might be as simple as replacing rbind with rbind.fill in mongo.find.all in the "if (data.frame)"?

That would work for me. I think it is the only way if we have 3 options in R (null/NA/NaN) but only 2 in mongo. I guess null_to_NA has to...

I already disabled travis. But my guess is that the error you get about `xcolor` is caused by different version of some R package. So I just wanted to keep...

If it can still be found and installed I would keep it.

I am just afraid of it getting very inconsistent and difficult to keep up to date. We cannot keep track of all the packages.

It apparently is not so easy (but I agree). I looked into it yesterday and it seems the CSL standard doesn't have something for this. I didn't dig very deep...

Also might be easier in the html version than the pdf version. The latter needs latex.

OK it seems like it is possible. While CSL doesn't seem to have specification for this latex does. Something like: ``` title = {\href{http://dx.doi.org/10.3390/metabo9070123}{{NMR} spectroscopy for metabolomics research.}} ``` seems...