Helper script to extract personal activity over the past $reporting_period, to
be used as a basis (if, like me, you don't want to trust your memory only...)
for writing activity reports.
Currently supports: tasks, commits, and code reviews.
It is not meant to be completely accurate, not to be used as is, but just as a
*starting point* to check where to look for interesting activities to report.
As such, it is overzealous, and will report activity on elements that you are
subscribed to, even if you're not necessarily the author of said activity.
Might need some tuning, but it would be useful to start using it and iterate
based on actual user feedback.