YITH WooCommerce Gift Cards Premium 4.10.0

New: added new shortcode yith_ywgc_display_gift_card_form to display the gift card form
Update: updated .pot file
Update: updated Plugin Framework
Update: Updated Dutch translation
Fix: PayPal issue with shipping costs
Fix: fixed the date picker format
Fix: fixing a string
Dev: added a new param to a function to avoid warnings
Dev: added new filter yith_gift_cards_template_amount_title
Dev: Default value for email trigger args

Fix: include all gift cards in conversion process of gift card dates

* New: added option to enable and disable the currency switcher integrations
* Tweak: choose date using a date picker when create a gift card at backend
* Tweak: new status "not sent" for gift card which have not been sent yet
* Tweak: disable autocomplete of the field "Delivery Date" on frontend
* Tweak: created procedure of backup before to proceed with the update of delivery date postmeta
* Tweak: display the currency symbol when the manual amount is zero
* Tweak: added a new icon in the "Add recipients" link
* Update: updated language file .pot
* Update: updated Spanish language file
* Update: updated Dutch language file
* Update: updated the Smart Coupons integration settings description.
* Update: updated WPML config
* Fix: fixed issue adding physical product and virtual gift cards
* Fix: fixed the date format conflict with the send delayed gift cards method
* Fix: fixed wrong usage of variable ywgc_data
* Fix: expiration date set to unlimited always
* Fix: fixed problems with the French translation
* Dev: added a filter to the general settings options yith_ywgc_general_options_array
* Dev: added new filter yith_ywgc_apply_gift_card_discount_before_cart_total
* Dev: added new filter to the cron job hour yith_ywgc_send_scheduled_gift_cards_hour
* Dev: added new filter yith_gift_cards_format_number_of_decimals