WooCommerce Order Delivery 2.6.5

* Tweak - Disable the current day for delivery if all its time frames have expired.
* Fix - Fixed issue which allowed selecting expired dates in the calendar.
* Fix - Fixed issue when trying to print an invalid time-frame object.

* Tweak - Updated calendar styles for supporting the new styles of the 'Storefront' theme.
* Tweak - Added compatibility with WC 3.7.
* Fix - Fixed warning when fetching the rates of a 'Table Rate' shipping method and the extension 'Table Rate Shipping' is not activated.
* Fix - Refresh field values after saving a time frame form

* Feature - Added compatibility with the extension 'WooCommerce Table Rate Shipping'.
* Feature - Enhanced 'Shipping methods' selector on settings pages.
* Tweak - Remove expired time frames from the select field when the delivery date is the current date.
* Tweak - The time frame field is also required when the delivery date field is required.
* Tweak - Assign the first available time frame when the delivery fields are in auto mode.
* Tweak - Assign the first available time frame during subscriptions renewal if the customer preferences can't be satisfied.
* Tweak - Added button for defining time frames from the 'Delivery days' setting.
* Tweak - Removed 'delivery days' form field when creating a time frame for a single delivery day.
* Tweak - Remove older update notices on plugin activation.
* Tweak - Added URL verification to the actions of the database updater.
* Tweak - Added blank content when there are no elements defined in the 'Time frames' field.
* Tweak - Improved the initialization of the plugin settings and now they are loaded on demand.
* Fix - Fixed PHP 5.2 compatibility adding the missing middle part in some ternary operators.
* Dev - Added classes for representing a delivery day, a time frame and collections of them.