fix for applyTypes signature
Added c.t.t.CoercibleType interface to allow for customization of individual field data types and formats. Also added the c.t.t.DateType implementation for managing string formatted dates to and from a long timestamp.
Updated c.o.Identity and c.p.a.Coerce to uses field type information during coercion.
Updated c.o.expression, c.o.aggregator, and c.p.assembly operations to honor field type information.
Updated provided c.s.Scheme subclasses to honor field type information.