Added NDA bank transaction file parser
Added Transaction -> SimpleEvent converter
Added purpose-of-flight filter and presence-of-invoicing-charge filter
Validate purpose of flight (and convert it to upper case)
Allow custom pricing function on "hourly" rule
Full 2014 pricing rules

- Also renamed HurlyPriceRule to FlightRule, since it wasn't really hourly anymore with the custom pricing option
Read invoicing configuration from file

- Plus two example configurations
Print price on individual lines
- Discard some separately invoiced or non-invoiced accounts
TODO list