Minor fix to day settings for periods and addition of favicon.
The big one! Major update to support modern PHP, plus other major updates.
Fixed: A bug has been reported that prevented periods configured on Sundays from being detected on the booking page when using the day-at-a-time booking display setting. This was caused by a misinterpretation of numeric values that are mapped to weekdays.
Updates to support PHP 5.3/5.4.