Update changelogs
Deleted shipping methods are now accessible from a shipping rate

Fixes #3829
Ensure Coupon Applicator actually, you know, APPLIES COUPONS.
Remove apply_coupon_code from StoreController, as it appears that it's overriden in OrdersController

OrdersController seems to be the only place which uses it.
Added Regexp tab matching
Catch exceptions within Spree::Stock::Estimator#shipping_methods and log them

Fixes #4227

Conflicts:
	core/app/models/spree/stock/estimator.rb
Import variables using full-path, so that an overridden file in the application will be loaded

Fixes #3415
Show advice to run bundle exec rake test_app if dummy/config/environment fails to load
Added missing index for variant_id and currency on spree_prices

Fixes #4232