some papers are missing .html & .jats & .xml versions

[rossmounce]

Could someone explain to me why some papers here have only a .crossref.xml & a .pdf file?

e.g. joss.02287

most other papers have .crossref.xml .pdf .html .jats & .xml

It's not a blocker for me, I can work around it, but having noticed it I thought I'd point it out as an issue that someone could fix at some point (probably not a high priority I'm sure...)

joss-papers$ find . -type f | grep '.jats' | wc -l
2378
joss-papers$ find . -type f | grep 'crossref.xml' | wc -l
2413

The above would seem to indicate there are at least 35 papers without .jats formatted versions