YITH WooCommerce Stripe Premium 3.29.0

* New: Support to WordPress 5.2
* Update: Plugin Framework
* Tweak: get_home_url() to get_site_url()
* Tweak: remove protocol from url before performing security check
* Dev: Added new filter yith_wcstripe_charge_params

* New: WooCommerce 3.6 support
* New: retry renews when a fail occurs
* New: added check over site url, to set Test Mode when plugin is enabled on a staging installation
* Tweak: disabled Make default button for expired cards
* Tweak: improved card form on mobile devices
* Tweak: avoid duplicated cards in card expiration reminder queue
* Tweak: updated card expiration reminder email, to provide correct information when card is already expired
* Tweak: improved error reporting system
* Tweak: system now register card fingerprint during webhook handling
* Update: internal plugin framework
* Update: dutch translation
* Fix: issue when trying to pay with a previously registered card (default card was applied)
* Fix: stripe do not execute code when customer tries to delete/set as default tokens created with other gateways
* Fix: avoid to register token twice, when the same card_id is already saved for the same customer
* Fix: avoid saving cards when related option is disabled

New: WooCommerce 3.5.4 support
New: button to automatically set webhook on Stripe
New: added reminder email for card expiration
Update: internal plugin framework
Update: Stripe php library to version 6.29.3
Update: Dutch language
Fix: processing renew instead of new order when reactivating subscriptions