Add woocommerce_coupon_discount_amount_html filter
Add woocommerce_cart_totals_coupon_html filter
Fix order discount input label "for" attribute
Fix remove filter typo
API: Add subtotal to orders response
API: Add item price to order line items response
API: Add feature image src to product response
Removed debug output
Merge pull request #4510 from Renkas/patch-1

Removed debug output
Merge pull request #4508 from maxrice/rest-api-tweaks

REST API Tweaks
Merge pull request #4507 from thenbrent/cart-coupon-filters

Cart coupon filters
Merge pull request #4506 from thenbrent/master

Fix order discount input label "for" attribute
fixed validation for "Exclude products" in coupons metabox, fixes #4509
fixed the indentation in includes/admin/post-types/meta-boxes/class-wc-meta-box-coupon-data.php
fixed some coding standards in includes/admin/post-types/meta-boxes/class-wc-meta-box-coupon-data.php
added coupon text for clarity
coding standards fixes
fix shipping cost total not updating when using select dropdown method Fixes #4515
fixes shipping total not updating when select method is used on checkout page
revised/ammend pull request 4513