date: add support for %q (quarter) in format string

[jfinkels]

Steps to reproduce:

date --date '2016-6-1' +%q

What happens now: uutils date terminates with an error message:

date: invalid format %q

What I expected to happen: GNU date prints the quarter number:

2

Notes: this is causing a failure in the GNU test file tests/date/date.pl.

[drinkcat]

Looks like %q format specifier is missing in chrono crate.

I'll have a look.

[drinkcat]

chronotope/chrono#1666 should do the trick.

With a local chrono checkout:

cargo run --config 'patch.crates-io.chrono.path="../chrono"' date --date '2016-6-1' +'%q'
...
2

[drinkcat]

Merged upstream. I guess we just need to wait for a release 0.4.40 now.

[drinkcat]

https://github.com/chronotope/chrono/releases/tag/v0.4.40 released. I assume the renovate bot will pick it up?

[cakebaker]

Fixed by #7360

@drinkcat thanks for adding the functionality to chrono :)