Rewrote the application with equivalent functional scope in TDD: v3
Minor formatting changes
Added main and acceptance test ok
Introduced Affine Pricing and retrofit PricingPlan with it. The test
becomes just a check of the declarative configuration.
Fixed bug in main
Evolved to a fluent style for pricing plans configurations, along with
built-in reporting capability of this configuration.
Fixed wrong config line in the properties
Added metrics over time