`tim` is intended as a quick support alias for timewarrior.
If invoked without any arguments, `tim` will print out a simple summary
of all tasks accomplished (for the day by default). It will also print
their ids for simple subsequent modification tasks.
If, however, invoked with additional arguments, `tim` will pass anything
along to timewarrior so anything happens as usual if invoked like this.
Thus, `tim` functions as a quick look into the day's timesheet or a
shorter alternative to the `timew` command.
