PLT-365 - Remove CompareUtils

See Guava DoubleMath.fuzzyEquals
See Guava Ordering.min/max
PLT-365 - Move ArgChecker to root of collect
PLT-362 - Currency and Money classes

Currency, CurrencyAmount, MultiCurrencyAmount, CurrencyPair, FxRate
PLT-358 - Enhance LocalDateRange

Add overlaps/intersection/union/stream
WIP - business days