YITH Event Tickets for WooCommerce Premium 1.35.0

* New: WooCommerce 3.6 support
* Tweak: added jquery-blockui as a dependency
* Tweak: improved message when a ticket is already checked
* Tweak: disable the service if it doesn't have stock
* Update: internal plugin framework
* Update: Spanish language
* Fix: how to get the services type select name for the CSV
* Fix: problem with the delimiter on csv exporter when the field doesn't exists
* Fix: added yes or no field to the text domain
* Fix: removed appropriate class when ticket message is closed
* Fix: fixed message colors when searching if the ticket is checked
* Dev: added filter yith_wcevt_ticket_purchased_row
* Dev: added filter yith_wcevt_display_fields_panel
* Dev: added filter yith_wcevt_export_csv

Tweak: allow numbers leading with zero in the numbers input
Update: updated plugin FW
Fix: fixed a warning
Fix: fixed problem to display shortcode in the right way
Dev: added new filter yith_event_ticket_display_barcode_option and yith_event_ticket_display_ticket_number_option
Dev: added new filter yith_wcevt_get_csv_list_column, yith_wcevt_get_csv_row and yith_wcevt_get_user_from_order
Dev: added dynamic filter yith_wcevt_passed_item_field_'.$field['_type']

New: Support to WordPress 5.0.2
Tweak: change input type to allow decimals on overcharge option
Update: Updated Dutch Language
Update: updated plugin FW
Update: updated .pot
Dev: added filter yith_wcevti_get_event_name
Dev: added filter yith_wcevti_view_pdf_and_gcalendar_post_status
Dev: added filter yith_wcevti_when_status_changed
Dev: added filter yith_wcevt_display_barcode_and_qr_code_notice
Dev: added new parameters on yith_wcevti_event_title_form filter