Added missing license
Added convenience DateUtil.parseYmd method
Added PatientDataDefinitions for age on date
REPORT-575 - CohortDefinition and PatientDataDefinition that refer to definition libraries
REPORT-576 - data definition to get age at time of an encounter
Added convenience constructor to ConvertedEncounterDataDefinition
REPORT-577 - Encounter data definition to get dateCreated and other audit info
Log time taken to evaluate each dataset in a report
REPORT-578: Extend ObjectFormatter capabilities to allow specifying locale