v3.6.8 Goosberry Crumble

A mouthwatering release including; bugfixes, customer balance changes, preparations for the next big Rails upgrade, and introduction of ViewComponent 🚀

User facing changes 👀

• Remove old balance implementation #7416
• Add customer name into subscriptions list to search subscriptions by customer name #7445

Technical changes 🔧

• Add test coverage on customer creation #7432
• Bump geocoder from 1.6.6 to 1.6.7 #7435
• Last preparations for Rails 5.2 #7421
• Bump ddtrace from 0.47.0 to 0.48.0 #7442
• Bump acts_as_list from 1.0.3 to 1.0.4 #7440
• Bump test-unit from 3.4.0 to 3.4.1 #7441
• Add test coverage on customer creation during checkout #7443
• Show unit price in the bulk buy modal #7428 (behind feature toggle)
• Remove duplicate checkout code #7315
• Add ApplicationRecord for customisations of models #7425
• Instrument Flipper with ActiveSupport #7427
• Bump rubocop from 1.12.1 to 1.13.0 #7447
• Suppress "Line items can't be blank" message on order creation process #7450
• Add ViewComponent and implement a style guide with StoryBook #7284
• Update CanCan permissions on adjustments #7452
• Hide enterprise fee adjustments in admin adjustments controller index #7420
• Add banner to Flipper UI to warn the admin users #7437
• Bump knapsack from 1.20.0 to 1.22.0 #7448