Added touch support to price filter widget using jquery ui touch punch
Added dependency of touch punch to wc-price-slider
Added two hooks to support refund Followup Emails
adding emogrifier class for inlining email styles
replacing old email style inliner with emogrifier inliner
implementing emogrifier email css inliner
updating email header version number
removing straggler CSS styles from email header template
changelog for email css inliner. :)
Merge pull request #6489 from BFTrick/css-inliner-2

Adding CSS Inliner
Merge pull request #6477 from 75nineteen/master

[Maybe 2.2] Added two hooks to support refund Followup Emails
[2.2] Fix refund date.

Fixes #6499
$cart_totals should be checked to see if its an array

Closes #6496
woocommerce_ prefix in refund actions, related #6477
Register post types before each unit test

Fixes #6501

see
https://core.trac.wordpress.org/changeset/29860/trunk/tests/phpunit/incl
udes/testcase.php, apparently we were #doingitwrong  🙈
Merge pull request #6503 from maxrice/6501-fix-failing-tests

Register post types before each unit test
[2.2] Make updater set parent backorder status

Closes #6494
Merge pull request #5767 from IAmJulianAcosta/touch-compability

Price filter widget touch compability
Refactor - get_product_search_form().

Also removed < 2.1 deprecated filter mapping.

Closes #4444
Define WC tables in wpmu_drop_tables

Closes #5396