WooCommerce Bookings 2.1.2

* Fix - Compatibility issue with API hook timing.

* Add - Meta data table for global availability.
* Add - Additional capabilities for more granular control of booking's features.
* Fix - Manual Booking checks calculates using exclusive/inclusive pricing even with taxes disabled.
* Fix - Clarified option label/description for start day restriction.
* Tweak - Performance optimization for generation of booking slots.

* Fix - Wrong escape for bookings start time blocks.
* Add - New filter woocommerce_booking_is_paid_statuses to allow custom booking statuses to be synced to Google Calendar.
* Fix - Unable to view Global Availability issue.
* Fix - Customer defined blocks durations not selectable with minutes based blocks.
* Fix - Customer defined booking duration: minimum/maximum values does not work if block size is in minutes.
* Fix - Customer defined block end times (hours) not calculated correctly.