Feature request: logging capabilities

[statzhero]

Running the makefile (or any other pipeline tool), from what I can tell, produces only minimal feedback. Personally, I find log output critical for reproducibility as well as to make sure things run as expected. A few suggestions:

1. Include, as an easy fix, the excellent tidylog package to the template. It masks dplyr and tidyr operations and is in my opinion the single most powerful way to avoid merge mistakes etc.
2. Add a "logging" functionality. I'm not aware of a base R solution to this desideratum [1] that would be comparable to Stata's log file system. There are dedicated packages (e.g. logger) but I haven't tried them.
3. Add more custom notifications? Via base::message or utils::txtProgressBar but it may not be general enough.

I look forward to hearing better ideas!

[1] One can have a weak version of it like this:

# Start logging
TODAY <- as.Date(Sys.time(), tz = "US")
logs <- file( paste0("outputs/import-log-", TODAY, ".txt") )
sink(logs, append = TRUE, split = TRUE)
sink(logs, append = TRUE, type = "message")

...

# Stop logging
sink() 
sink(type="message")