* push notifications: handle some more error codes and when the user is loaded using .lean()
* fix lint
* do not send push notification if message is missing
* Fix purchasing non-recurring subscriptions
This fixes a bug where non-recurring subscriptions were not correctly purchased on iOS.
* fix linter errors
* refactor(lint): line length
* feat(subscriber): award mystery items at cron
* fix(mystery): backfill skipped months
* fix(mystery): adjust subscriber text
* fix(mystery): correct moment logic
and remove irrelevant tests
* fix(mystery): build set one month in advance
* fix(mystery): don't add empty set to Time Travelers
* refactor(mystery): readability
* bug fix: free group plan subscription from party/guild is no longer cancelled when leaving a guild
* free group plan subscription from party/guild no longer gets cancelled when leaving a guild
* bug fix: free group plan subscription from party/guild is no longer cancelled when leaving a guild
* free group plan subscription from party/guild no longer gets cancelled when leaving a guild
* Added tests to check if a member of a group plan maintains free subscription when leaving another group without a plan
* Added tests to check if member of a group plan still keeps free subscription when leaving some other group without a plan
* bug fix: free group plan subscription from party/guild is no longer cancelled when leaving a guild
* free group plan subscription from party/guild no longer gets cancelled when leaving a guild
* bug fix: free group plan subscription from party/guild is no longer cancelled when leaving a guild
* free group plan subscription from party/guild no longer gets cancelled when leaving a guild
* Added tests to check if a member of a group plan maintains free subscription when leaving another group without a plan
* Added tests to check if member of a group plan still keeps free subscription when leaving some other group without a plan
* wip: define items as mixed objects
* add default owned gear
* mark modified
* more mark modified
* more mark modified
* more mark modified
* more mark modified
* fix common tests
* fix common tests
* update mongoose
* add itemsUtils
* use new util function in hall controller
* add tests for items utils
* update website/server to mark all items as modified
* start updating common code
* update login incentives
* update unlock
* remove changes to package-lock.json
* remove changes to package.json
* feat(subscription): promo banner in modal
* feat(subscription): promo banner on main page
* fix(banners): remove extraneous margin adjustment
* fix(banners): various
* feat(promotion): gift 1, get 1
* fix(promo): various
* chore(promo): add Bailey
* fix(promo): use different email template for promo beneficiary
* fix(promo): turns out Winter is meaningful
* fix
Newly subscribed accounts receive erroneous notification that they have Mystery Items
* Added unit test for #10496
* Restored a previous unit test
* add hasCancelled method for group/user, prevent cancelling a subscription twice
* wip
* paypal: do not cancel a subscription twice
* make sure hasCancelled and hasNotCancelled return a boolean result
* remove parallel saves from the code
* fix more unit tests
* do not save users when sending message in buyGift (saved later)
* fix test
* reinstall
* fix tests
* fix tests
* Rarranged payment index functions
* Moved gem function
* Increased buy gems test coverage
* Reduced length of functions. Reduced cognitive complexity
* Added more tests for verifyGemPurchase
* Added more tests for subscribe
* Added user is subscribed check
* Reverted gulp task
* Added existence check
