Colors can be disabled with the new `--no-colors` argument.

BREAKING CHANGE: the fields "details" and "ephemerides" have been switched.

BREAKING CHANGE: invoking kosmorro command without --latitude and
--longitude arguments will now only output the Moon phase and,
eventually, the events for the given date (or today if date not given).

BREAKING CHANGE: JSON format now returns the moon phase as an object
instead of a string