When the option log.show-signature is set in .gitconfig the parser does not work:
> git-who --version
v0.6 5249eb5
> git-who
[works fine]
> git config --global log.show-signature true
> git-who
error running "table": failed to tally commits: error iterating commits: error parsing date from commit gpg: Signature
made 2020-05-12T12:47:56 UTC: strconv.Atoi: parsing "a67ca69": invalid syntax
Probably .gitconfig should be ignored