git standup argument for author date

[tfendin]

git standup now shows the commit date for the commit. I'd like an option to show the author date instead.

[tfendin]

The documentation should then state that the new option doesn't affect the -d and -w options.

[spacewander]

We can add an option to configure GIT_PRETTY_FORMAT?

[tfendin]

Yes, it seems like an easy fix.