utils-std version 0.0.2 - 2025-03-06

Highlights:
- new command: shuf
- POSIX.1-2024 compatible make(1) required, bmake notably lacks $^ support
- bootstrapping no longer relies on pre-generated bootstrap.sh
- date(1) now supports:
  - new option: -I
  - %N (nanoseconds) and %:z (±00:00) formats
- date(1) and touch(1) now supports parsing Email and asctime() date formats

Haelwenn (lanodan) Monnier (44):
      More readable Makefile with building a lib/utils.a
      lib/reallocarray.h: FreeBSD now wants _POSIX_C_SOURCE undefined
      configure*: test linking as well, makes sure no lib is missing
      cmd/cut: consistently use fputwc in cut_c
      cmd/paste: define _POSIX_C_SOURCE
      cmd/whoami: add copyright header
      cmd/whoami: define _POSIX_C_SOURCE
      configure.d/sendfile_linux: use (off_t)0 instead of NULL
      configure*: disable cmd/join when fgetln isn't available
      .builds/archlinux.yml: new
      cmd/*.c: simply reset errno after setlocale(3) instead of throwing a warning
      test-cmd/chown.t: ArchLinux has :nobody but not :nogroup
      test-cmd/id.sh: drop `id -G` test
      cmd/shuf: new
      Use `for(int c; c = getopt;)` instead of `while((c = getopt))`
      cmd/shuf: switch from atoi to strtoul
      cmd/shuf: write correct amount of lines
      cmd/shuf: handle "-" argument
      test-cmd/shuf.sh: new
      test-cmd/shuf.sh: fix for BSDs
      cmd/date: use `return 1` instead of exit()
      cmd/touch: use `return 1` instead of exit()
      configure: generate config.h to properly invalidate after running ./bootstrap.sh
      cmd/uniq: Handle "-" argument
      test-cmd/uniq: Change from cram to tap.sh
      cmd/ln: support target-less usage
      cmd/chmod: add -F/--reference option
      cmd/printf: surround illegal format character in quotes
      bootstrap.sh: transform into bootstrap.mk
      cmd/date: get nanoseconds via timespec_get
      cmd/date: add support for -I option along with %N and %:z
      cmd/date: use clock_gettime instead of timespec_get
      cmd/date: initialise outstr and set it to empty string on empty format
      cmd/date: increase readability of %% handling
      test-cmd/{tap,mktemp}.sh: remplace 'echo -n' with 'printf %s'
      lib/iso_parse: Add support for email datetimes
      lib/iso_parse: Add support for asctime() datetimes
      remove leftover `c` declaration from move to for(;getopt;)
      cmd/split: fix fwrite error check
      cmd/uniq: explicit cast for `cur_shift > cur_len`
      configure.d/getopt_long.c: format
      cmd/mktemp.1: Add link to "Austin Group Defect 1616" standardization
      cmd/chmod: drop -F alias for --reference
      lib/iso_parse: ignore space before timezone offset in ISO datetimes