commerce_license_billing 7.x-1.0-beta1

Biggest changes:

• Prepaid licenses are now prorated properly (on first purchase and in recurring orders).
• Prepaid licenses can now have plan changes (postponed until the end of the billing cycle).
• Postpaid products can choose to have the license plan changes and cancellations postponed until the end of the billing cycle.
• Major fixes to usage based billing.
• Expanded CardOnFile integration (automatic status change of the recurring order to "completed" after a charge)

Changes since 7.x-1.0-alpha2:

• #2141155 by bojanz: Figure out counter usage pricing over multiple plans.
• Make it easier to debug non-matching line items in tests.
• #2220243: Change the billing cycle expiration logic
• Add per-product settings for postponing license changes.
• Allow usage groups to enforce change scheduling.
• Add commerce_license_billing_change_status().
• #2141281 by bojanz: Make it possible to postpone the plan change to the end of the billing cycle.
• #2139917 by balintk: Update status of successfully charged recurring order.
• #2218153 by bojanz: The recurring process doesn't stop when there are no more active licenses.
• Reimplement currentUsage() of usage groups.
• commerce_license_billing_usage_history_clear() needs to reset the static cache.
• Delete usage records for a license when a license gets deleted.
• Replace commerce_license_billing_usage_clear() with a more selective commerce_license_billing_usage_history_clear().
• Rewrite CommerceLicenseBillingUsageGroupBase::isComplete(), fix tests.
• Clean up commerce_license_billing_usage_history_list().
• Clean up commerce_license_billing_plan_history_list().
• #2148787 by bojanz: Preload the revision in commerce_license_billing_plan_history_list().
• #2157829 by bojanz: Initial prepaid amount is not prorated.
• Allow CommerceLicenseBillingGaugeUsageGroup::addUsage() to be used without a parameter.
• Fix weirdest accidental bug ever.
• Fix test fail on Commerce 1.9
• Clean up rules.
• #2207421: Don't prorate prepaid licenses for the next cycle.
• Allow gauge usage groups to opt out of charging.