killbill-uncached

invoice: Fix test to return correct class ContiguousIntervalCapacityUsageInArrear

invoice: Fix tests for new json formats -- see d65e9e0b82

invoice: (controversial) Add details for consubale usage …

even when past details are abstent

invoice: Removed unsued String.format in Preconditions.checkState

invoice: Remove unused methods in ContiguousIntervalUsageInArrear

invoice: Fix json deserialization for consumable details …

(new json)

invoice: Fix generation and usage details for CAPACITY mode …

to reflect new JSON -- and fix tests accordingly

invoice: Park acccount when we detect missing usage from past …

period

invoice: Fix bad imports

invoice: Refactor usage code to extract CONSUMABLE and CAPACITY …

-- code maintainability