Renumbering the file names

[jennybc]

I want to port the LoTR tidy data content into this repo. This will mean that one placeholder file:

08_tidy-data.Rmd

will get expanded to 2 - 4 files, similar to the content on writing functions:

18_functions-part1.Rmd
18_functions-part2.Rmd
18_functions-part3.Rmd

Other than the mechanical task of renumbering, @gracelawley, since you're the most familiar, is this going to have link implications? I know (think?) it shouldn't affect external links, since this was one of the main objectives of the reboot, i.e. to have stable, number-free, human-facing URLs. But will I need to re-run any of the internal link-y code?