main.go: Handle the `--date` argument

If no date is passed in, default to the current date. Otherwise, parse
the date into a time that can be used to create the `TimeEntry`.

* Rename `date` to `date_str` to allow us to use `date` for the
  `time.Time` that gets sent to `NewTimeEntry()`.
* If parsing fails, print an error message and exit.
* In order to use the `err` variable without redefining `date` on line
  66, define it at the top of the function.

0 files changed, 0 insertions, 0 deletions