0.002   2019-05-18 (PERLANCAR)
	- [bugfix] Properly preserve (and reverse, when -r) the order of
	  lines having the same key.
	- [doc] Mention sort's -k & -s and example on how to do the
	  equivalent using paste + sort + cut.
0.001   2019-05-18 (PERLANCAR)
        - First release.