WooCommerce Zapier Integration 2.10.0

* Full details: WooCommerce Zapier 2.1 Released
* New: Add support for the newly released WooCommerce Subscriptions v3.1. #426, #431
* Fix: Avoid a PHP fatal error that occurs with WooCommerce Subscriptions v3.1 (which introduces a v3 subscriptions REST API endpoint). PR #425
* Fix: Ensure Subscriptions webhooks are created with the REST API v1 version, to improve compatibility with WooCommerce Subscriptions version 3.1. #431
* Fix: Performance Improvement: ensure resources are initialised only once (not twice). PR #411.
* Change: Remove unused REST API endpoint routes and methods. #412
* Change: Minimum required PHP version is now 7.0. No longer supporting PHP 5.6.x. #423
* Change: Minimum required WordPress version is 4.9.0. #423
* Change: Minimum required WooCommerce version is 3.7.0. #213, #423
* Change: Marked as compatible with WooCommerce 5.2. PR #417, PR #428
* Change: Update documentation links to new doc.om4.io site. PR #439
* Dev: Refactor resource definitions #422

* Full details: WooCommerce Zapier 2.0.8 Maintenance Release
* Change: WooCommerce Zapier now integrates with 3000+ apps on Zapier.com. #415
* Change: Authentication key retention. #415
* Change: Legacy Feed Migration deadline. #415
* Change: Improve translatable strings with disambiguation by context. #415
* Change: Marked as compatible with WordPress 5.7.
* Change: Marked as compatible with WooCommerce 5.1

* Fix: Correctly handle authentication requests for complex passwords containing Double-quote (") or single-quote (') characters. The behaviour is now in-line with how WordPress core handles passwords internally. #377
* Change: Marked as compatible with WordPress 5.6.
* Change: Marked as compatible with WooCommerce 4.8.