You can view it at https://plugins.svn.www.ads-software.com/woocommerce/tags/2.6.3/readme.txt
= 2.6.3 – 19/07/16 =
* Fix – Security – Escape captions in product-thumbnail and product-image templates (template versions have been bumped).
* Fix – Fixed how calculate shipping tax rates when using more than one tax class.
* Fix – When duplicating product variations, set title, name, and guid.
* Fix – Use permission id to revoke access to downloads to prevent removing wrong rows.
* Fix – Normalized ‘read more’ buttons.
* Fix – Add to cart notices for grouped products.
* Fix – Do not sanitize passwords in the settings API.
* Fix – Handle shipping zone location range conversion during update (dashes to …).
* Fix – Always remove commas while processing flat rate costs.
* Fix – Ensures account page layout is only applied to desktop-sized displays.
* Fix – When getting layered nav counts, take search parameters into consideration.
* Fix – Free shipping show/hide javascript.
* Fix – Strip hash characters when exporting reports.
* Fix – Use permission id to revoke access to downloads to prevent removing wrong rows.
* Fix – When duplicating product variations, set title, name, and guid.
* Fix – Set more appropriate default rounding precision based on currency decimal places.
* Fix – Fix message styles for empty carts.
* Fix – Fixed the load of the WC_Email_Customer_On_Hold_Order class.
* Fix – Don’t perform cart update on search submit.
* Dev – API – Added support for WP REST API with custom URL prefixes.
* Dev – API – Delete variations when deleting a variable product.
* Dev – API – Fixed how we check for product types.
* Dev – Added woocommerce_cart_id filter.
* Dev – Add shortcode name param to shortcode_atts function calls.
* Dev – Post custom data when fetching a variation via ajax.
* Dev – Include child prices in grouped_price_html filter.
* Dev – Allow filtering of variation stock quantity.
* Dev – Added $_product argument to ‘woocommerce_restock_refunded_item’ hook.
* Dev – Added a filter hook for the wc_ajax endpoint url.
* Tweak – Include account page link in new customer account emails.
* Tweak – Updated all URLs from WooThemes.com to WooCommerce.com.
* Tweak – Cache the result of WC_Comments::wp_count_comments() in a transient (improves performance).
Came this way for the same reason.