* Upgrade Django to 3.0 and other dependencies to recent versions
* Fix otp version contsraint
* Remove six dependency
* Resolve some warnings
* Fix failing tests
* Update django-countries
* Resolve all RemovedInDjango31Warnings in test suite
* Run isort
* Fix import
* Update PostgreSQL version on travis
* Add Phonenumber-Field as to Questions
* Add setup requirements
* Add list of ask-during-checkin restricted question types and enforce it
* Fix requirements
* Fix crash using custom locales
* Re-format phone numbers when outputting to humans
* Initialize country code field with a guess for the customer's country
* Document TEL type in API docs
* Stripe SCA
- Upgrade to latest Stripe API
- Deprecate Stripe Checkout for CC
- Migrate CC payments to Payment Intents
* Move SCA to its own view
* Handle CardErrors for PaymentIntents
* Abilty to handle charge webhooks with PaymentIntents
* Better handling of Stripe References
* Fix Stripe Tests
* Move SCA page into orderlayout; perform iFrame SCA
* Handle disputes and pi-webhooks better, fill more into ReferencedStripeObject
* Optionally pass prefetched PaymentIntent to handle-func
* Fix style
* Send message to window.parent not window.top (widget compatibility)
* More accurate loading message
* Show a cog on sca_return.html. On a good internet connection, you barely see it, but on a bad one…
* Robust error handling
* If it's a method and used like a method, let's actually call it like a method!
* Remove logging statement
* Fix JavaScript interference with other frame events
* Use 4:3 aspect ratio, but at least 600px
* Adjust to django_scopes
* Initial work on seating
* Add seat guids
* Add product_list_top
* CartAdd: Ignore item when a seat is passed
* Cart display
* product_list_top → render_seating_plan
* Render seating plan in voucher redemption
* Fix failing tests
* Add tests for extending cart positions with seats
* Add subevent_forms to docs
* Update schema, migrations
* Dealing with expired orders
* steps to order change
* Change order positions
* Allow to add seats
* tests for ocm
* Fix things after rebase
* Seating plans API
* Add more tests for cart behaviour
* Widget support
* Adjust widget tests
* Re-enable CSP
* Update schema
* Api: position.seat
* Add guid to word list
* API: (sub)event.seating_plan
* Vali fixes
* Fix api
* Fix reference in test
* Fix test for real
* Upgrade django and stuff
* Update to Django 2.2 and recent versions of similar packages
* Provide explicit orderings to all models used in paginated queries
* Resolve naive datetime warnings in test suite
* Deal with deprecation warnings
* Fix sqlparse version
