weekViewStylerHeaderView returns optional?

[perbrondum]

The readme indicates that the return is not optional, but code demands it.
Readme:
// Create the header view for the day in the calendar. This would normally contain information about the date
func weekViewStylerHeaderView(_ weekView: ECWeekView, with date: DateInRegion, in cell: UICollectionViewCell) -> UIView

[EvanCooper9]

I'll update the docs the next time I do an update. If you'd like to open a PR you can as well :)