tooltips on variations not showing after using link all variations button Fixes #4366
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.
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.
Add missing textdomains
Merge pull request #4438 from LeGaS/missing-textdomains

Add missing textdomains
Merge pull request #4436 from shoheitanaka/patch-5

correct address_formats in Japan
Merge pull request #4434 from claudiosmweb/fix_reports_customer_list

Remove deprecated methods in includes/admin/reports/class-wc-report-customer-list.php
Merge pull request #4374 from splashingpixels/master

tooltips on variations not showing after using link all variations butto...
#4374
Link format #4395
Merge pull request #4437 from justinstern/master

A Pair of Useful Shipping Related Actions
Merge pull request #4429 from toddlahman/master

Registration error handler and my_account_message hook
woocommerce_my_account_message #4429
fixed esc_urL() in get_paypal_args method
fixed the indentation in includes/gateways/paypal/class-wc-gateway-paypal.php
fixed coding standards in includes/gateways/paypal/class-wc-gateway-paypal.php
Merge pull request #4439 from claudiosmweb/fix_typos_in_paypal_gateway

Fix esc_urL() in WC_Gateway_Paypal class