v0.6

• Git who now respects a .mailmap file in the working tree (thanks to Reddit user jmvidal for this suggestion)
• Added an --until option to all subcommands
• The table subcommand, when given the -c option to sort authors by first commit time (descending), now shows the first commit time in a table column
• Fixed a bug that would understate the number of authors when running the table subcommand using the -l or -f flags, only when there are commits in the commit history introducing no diffs