SCHEDULE_FORCE_TODAY is redundant?

Hi,

further reading of the handbook has brought me to __SCHEDULE_FORCE_TODAY__ setting, and by following the example from the handbook, it seems to be that instead of having __SCHEDULE_FORCE_TODAY__ setting, the same thing could be accomplished by just using:
```
nikola new_post
```
without 
```
--schedule
```

option, which would mean one setting less to take care of in Nikola?