Previously 'Продажи' stats counted by Subscription.created_at which only
reflects initial creation date. Renewals update end_date on existing record
without changing created_at, so renewals were never counted as sales.
Now counts completed SUBSCRIPTION_PAYMENT transactions which are created
for every purchase and renewal. Also standardized date boundaries to use
explicit midnight UTC datetime instead of date objects.
Fringg
06c3996da4