YITH Stripe Connect for WooCommerce Premium 2.40.0

* New: support for SCA-ready payment methods
* New: extended card management, even without YITH WooCommerce Subscription enabled
* New: renew needs payment email (only when used with YITH WooCommerce Subscription)
* New: support for 2019-09-09 API version
* Update: internal plugin framework
* Update: Stripe PHP to version 7.0.2
* Update: Italian language
* Fix: avoiding duplicated connection attempts
* Dev: added new action 'yith_wcsc_after_disconnect_with_stripe' after user disconnect from Stripe
* Dev: filter yith_wcsc_disconnect_from_stripe_button_text and filter yith_wcsc_connect_with_stripe_button_text

* New: WooCommerce 3.7 support
* Tweak: add maxlenght to expiry date
* Tweak: now permit decimals to commission rate
* Update: internal plugin framework
* Update: Italian language
* Update: minify js files
* Dev: added new param to yith_wcsc_create_commission filter
* Dev: added new hook after connect with stripe action
* Dev: new filter yith_wcsc_args_create_charge
* Dev: added new filter yith_wcsc_commission_value
* Dev: add parameters to the filter yith_wcsc_commission_value

* Tweak: add no cache headers
* Tweak: improve how to get the CSV file
* Tweak: added ignore_user_abort
* Update: internal plugin framework
* Update: Updated .pot
* Fix: preventing notice when user_id not found in the receiver array
* Fix: warning when creating export CSV
* Fix: Fixed users could get all commissions in csv and pdf files
* Fix: Prevent error of insufficient funds of a card
* Fix: Removed undefined method add_block that generated fatal error with subscription item
* Fix: Fixed subscription renew orders payment issue
* Dev: Added wc-credit-card-form among yith-stripe-connect-js script dependencies, to be sure that it is always loaded at checkout
* Dev: Added new filters 'yith_wcsc_prepare_columns_list' and 'yith_wcsc_prepare_rows_list'