tooltips on variations not showing after using link all variations button Fixes #4366
Only continue getting checkout value if null
Merge pull request #4420 from ragulka/checkout-get-value

Only continue getting checkout value if null
misspelling in class-wc-admin-welcome.php

Common misspelling of receive.
Notice fix and Checkout Shipping Method classes

Fixes an admin notice.  Adds a single class to the checkout shipping
method elements for convenience in collecting all of them via CSS
selector
Registration error handler and my_account_message hook

To block registration spam, and authenticate the $_POST values, a
woocommerce_process_registration_errors filter hook is needed.

WordPress has a login_message filter, which causes a duplicate message
on the My Account login page since WC uses the same filter hook name. A
different filter hook name, such as my_account_message, would eliminate
this issue.
fixed the posts_clauses filters in top_rated_products method of the WC_Shortcodes class
Fixed the indentation in the includes/class-wc-shortcodes.php file
fixed some coding standards
Merge pull request #4423 from shoheitanaka/patch-3

misspelling in class-wc-admin-welcome.php
Merge pull request #4430 from claudiosmweb/fix_top_rated_products_shortcode

Fix top rated products shortcode
Merge pull request #4428 from justinstern/master

Notice fix and Checkout Shipping Method classes
On cancel, use cart page unless otherwise defined. Closes #4375
Turkish States Closes #4424
Add classes for placeholder Closes #4432
wc_print_notices Closes #4431
changed wpdb::escape to esc_sql()
fixed the indentation in includes/admin/reports/class-wc-report-customer-list.php
fixed coding standards
correct address_formats in Japan

in Japan ,the name order is last (family) name to first name.