renaming and moving abstract-wc-email file
removing all isntances of abstract from the WC_Email class
using WC_Email send method for all WC emails
Adds a woocommerce_add_to_cart_sold_individually_quantity filter

Additional control over the quantity added when a product is "sold
individually"
include original $quantity with
woocommerce_add_to_cart_solid_individually_quantity filter
new filter for adding custom 'action buttons' on the order_items metabox in the admin edit order screen
loushou
woocommerce_found_customer_details filter improvement

Adding $type_to_load attr to woocommerce_found_customer_details filter
[#6337] Return variation meta if it exists

includes some code standards cleanup
product meta box
product column thumbnail
category meta box and category column thumbnail
Added $user_id
Use 'no' to disable the gateway
Enable tooltip for woocommerce_wp_checkbox in metabox
Allow the use of the `desc_tip` value to add a tooltip to the checkbox
field as allowed by other metabox fields.
woocommerce_get_children filter from 2.2
Do not escape redirect url in form handler
Ignore /logs

Because sometimes logs appear and we don't want them to
be checked in, do we?
Add maxlength attribute to textarea fields
Adding refunds to Sales by Date report
Create a new axis for "in refunds" on the sales by date report.  Include
the refunds in the included time period.  Refunds do not reduce the sales
total in the report.
Merge pull request #6450 from ChuckMac/refund_report

Adding refunds to Sales by Date report