# Functions
NewDelivery will create an implementation of postmand.DeliveryRepository.
NewDeliveryAttempt returns postmand.DeliveryAttempt with db connection.
NewMigration will create an implementation of postmand.MigrationRepository.
NewPing will create an implementation of postmand.PingRepository.
NewWebhook will create an implementation of postmand.WebhookRepository.
# Structs
Delivery implements postmand.DeliveryRepository interface.
DeliveryAttempt implements postmand.DeliveryAttemptRepository interface.
Migration implements postmand.MigrationRepository interface.
Ping implements postmand.PingRepository interface.
Webhook implements postmand.WebhookRepository interface.