**Passes to the beta version. Almost production-ready.** - Fixes handling of closed periods (which were considered as open). - Replaces the `DayPeriods` namedtuples with a `Day` class. - Renames the `get_day_periods()` method to `get_day()`. - Fixes regexes in the `sanitize()` function. - Fixes the `monthday_date_month()` method of the transformer. - Raises a ParseError when a minute is not between 0 and 60. - Fixes a sanitization regex for "H:MM" formats. - Raises a ParseError for `<time_selector> closed` formats, as their parsing does not completely work yet. - Adds a `temporary_location()` contextmanager. - Adds a "fake support" of commas as rule separator.