WooCommerce Zapier Integration 2.12.0

* Full details: WooCommerce Zapier Version 1.9.2 Released
* Fix: Avoid a PHP Fatal error in hosting environments that have PHP opcode caching enabled with opcache.save_comments=0, which was causing reflection to fail. #184
* Fix: Use JSON file for sample data instead of Reflection. #184
* Fix: Do not use Reflection for validation. #184
* Change: Remove temporary hotfix that was implemented in v1.9.1.

* Fix: Implement a hotfix for uncommon web hosting environments that have opcode caching enabled with opcache.save_comments=0 #184.

* Full details: WooCommerce Zapier Version 1.9 Released: Improved Line Item Support and More!
* New: Improved [line item support in Zapier](Feature Spotlight: Line Item Support in WooCommerce Zapier). #90
* New: Added link to logging in the plugin page. #119
* New: Notice for administrators if PHP version is not supported. #164
If the plugin installed in a PHP 5.2 - 5.3 environment, it won't work, only displaying a message.
* Fix: Updated sample data in the extension and the Zapier site to better represent real data. #151
* Fix: When WooCommerce Checkout Field Editor is installed, avoid a PHP notice. #164
* Change: Use WooCommerce for logging. #90
* Change: Ensure SSL certificate verification occurs when sending data to Zapier. #168
* Change: Minimum required PHP version is now 5.4. No longer supporting PHP 5.2.x and 5.3.x. #154
* Change: Introduce namespaces and class autoloader. #150 #161
Deprecated all existing class names and replace them with new namespaced classes. #161
* Change: Filter parameters are changed: #161
* In `wc_zapier_data` filter the second parameter is now of type `OM4\Zapier\Trigger\Base` (was `WC_Zapier_Trigger`).
* In `wc_zapier_data_***` filter the second parameter is now of type `OM4\Zapier\Trigger\Base` (was `WC_Zapier_Trigger`).
* In `wc_zapier_data_json` filter the second parameter is now of type `OM4\Zapier\Trigger\Base` (was `WC_Zapier_Trigger`).
* In `wc_zapier_data_json_***` filter the second parameter is now of type `OM4\Zapier\Trigger\Base` (was `WC_Zapier_Trigger`).
* In `wc_zapier_scheduled_event` hook the third parameter is now of type `OM4\Zapier\Trigger\Base` (was `WC_Zapier_Trigger`).
* In `wc_zapier_send_asynchronously` filter the second parameter is now of type `OM4\Zapier\Trigger\Base` (was `WC_Zapier_Trigger`).
* Change: Using a new rigid structure for payloads. #50 #149 #151 #152
* Change: Notice for administrators if WooCommerce not installed. #161
If the plugin installed without WooCommerce, now displaying a message.
* Change: Removed `woothemes_queue_update` and legacy woo* files. Updates are now handled by WooCommerce core. #161
* Change: Simplified WooCommerce check. #161
* Change: Remove redundant admin CSS. #155