WooCommerce Composite Products 10.1.3

* Fix - Use 'htmlspecialchars' to encode special characters in 'composite_settings' data attribute.
* Fix - Component quantity update using +/- inputs in Chrome not triggering totals update.
* Tweak - Prevent component autotransition on reset.
* Tweak - Entering an 'id' when importing JSON-encoded component/scenario data using the built-in CSV Importer is now optional.

* Fix - WooCommerce REST API v2 support added.
* Fix - Duplicate child cart items when renewing/resubscribing to subscription-enabled composites created with 'WooCommerce Subscribe All the Things'.

* Important - WooCommerce 3.1 support added.
* Feature - Added support for importing/exporting composite products using the WC product importer/exporter, introduced in WC 3.1.
* Tweak - Added 'woocommerce_composited_cart_item_name' and 'woocommerce_composited_order_item_name' filters.
* Tweak - Introduce runtime caching of composite price methods' output. Use 'woocommerce_composite_prices_hash' filter if applying price filters conditionally and conditions change during a single request.
* Fix - Error on add-to-cart validation of optional Components when "WooCommerce Name Your Price" is installed.