WooCommerce Subscriptions 6.2.0

* Fix: With Mixed Checkout disabled, only remove the add to cart notice when redirected straight to checkout. Fixes issue where error notices are removed incorrectly. PR#2541
* Fix: With Mixed Checkout disabled, only empty cart when the variation ID is the same but with different attributes. PR#2540
* Fix: Remove the "\n" character from variable subscription item tooltips in the admin subscriptions table. PR#2481
* Fix: Allow users to purchase limited to any status subscription products under circumstances where the customer is blocked from purchasing because of cancelled orders. PR#2485
* Fix: Prevent deletion of product variations in use by a subscription. PR#2507
* Fix: Get default product price when no price arg is passed into `get_price_string()`. PR#2558
* Fix: Avoid potential for division by zero errors when switching. PR#2574
* Fix: Only force payment method selection during switch if a new subscription will be created. PR#2567
* Fix: Remove trailing space from address_type variable. PR#2595
* Fix: Ensure the opening span tag is present for all args passed to get_price_string(). PR#2597
* Fix: Set the product's price to the sale price even if it's 0. Fixes display issues with subscription products on sale for $0. PR#2601
* Fix: While resubscribing, ensure subscriptions with multiple line items charge the correct amount for all line items, not just the 1st. PR#2585
* Fix: Hide product stock settings while editing variable products. PR#2563
* Fix: Allow subscription coupons to be applied while switching subscriptions. PR#1863
* Fix: Ensure subscriptions created via the API with an active status and a set_paid arg set to true are saved. PR#2609
* Fix: Ensure Net Gain/Loss calculations for subscription reports convert dates correctly to match the site's timezone. PR#2593
* Fix: Prevent the possibility for fatal errors caused by calling undeclared functions during the payment method change requests. PR#2613
* Tweak: Ensure sign up fees are numeric before attempting to use them in calculations. PR#2551
* Tweak: Only clear related order cache on renewal order changes. PR#2555
* Tweak: Improve checkout performance by avoiding related renewal orders query. PR#2550
* Tweak: Add the `$plain_text` arg to order item meta start and end hooks. PR#2515
* Tweak: Refactor the view subscription template. PR#2575
* Tweak: Add Subscription My Account endpoints to wpml-config.xml file. PR#2578
* Tweak: Add 'woocommerce_subscriptions_product_limited_for_user' filter. PR#2596
* Tweak: Clear the cart if the product being added to the cart is sold individually when mixed checkout is disabled. PR#2602
* Tweak: Use WC_DateTime objects and `getTimestamp()` rather than `format( 'U' )` to avoid possible issues in earlier PHP versions. PR#2588
* Tweak: Add pagination to the My Account Subscriptions table. PR#2537
* Tweak: Catch, log and display an admin notice after a scheduled subscription action timeout. PR#2484

New: Provide custom options for subscription My Account endpoints. PR#2511
Fix: Reinitialize tooltips after changing switching settings. PR#2517
Fix: Only add inclusive tax rates to renewal cart items if product is taxable. PR#2524
Fix: [WC3.3] Fix switching between grouped products by ensuring the switch request arguments are posted to the add to cart form. PR#2535
Fix: Use correct meta key and compare argument when getting subscriptions with wcs_get_subscriptions() when ordered by end or trial date. PR#2528

* Fix: Use line item meta values in a WC version compatible way. PR#2469
* Fix: Only log cache manager messages if the logger has been loaded. PR#2468
* Fix: Init `WC()->mailer()` to make sure our retry email classes are available and loaded. PR#2476
* Fix: Update calls to 'woocommerce_payment_complete_order_status' to include order as 3rd argument. PR#2503
* Fix: Prevent wp_kses from stripping off the allow_clear attribute of Select2 elements. PR#2354
* Fix: Update `woocommerce_cart_totals_coupon_html` filter to include an extra arg introduced in WC 3.0. PR#2447
* Fix: Ensure the Upcoming Revenue report correctly calculates revenue in periods beyond the next payment date. PR#2461
* Fix: [WC3.2] Print the order downloads table in renewal order emails. PR#2522
* Fix: [WC3.3] Replace uses of deprecated `woocommerce_params` with 'woocommerce_get_script_data'. PR#2509
* Fix: [WC3.3] Get the active set of PayPal API credential depending on the gateway mode. PR#2514
* Fix: [WC3.3] Display the filter by customer on the admin subscriptions table. PR#2521
* Tweak: Add Subscriptions template overrides to system status. PR#2422
* Tweak: Do not empty cart when adding additional units of a subscription product when mixed checkout is disabled. PR#2464
* Tweak: Trigger a `do_action` when customers remove and readd line items to their subscription. PR#2458
* Tweak: Untrash subscriptions when parent order is untrashed. PR#2472
* Tweak: Skip the My Account Subscriptions table, linking directly to the subscription if customer only has one. PR#2474
* Tweak: Change the subscription product length/expiration label from 'Expire after' to Subscription length. PR#2483
* Tweak: Reword the Mixed Checkout setting description. PR#2490
* Tweak: Cache user subscriptions to improve performance of limitation queries and user API functions. PR#2388
* Tweak: Pass the `$number` parameter to callbacks hooked onto `woocommerce_subscription_periods` and `woocommerce_subscription_trial_periods`. PR#2520