WSDL 69+ changes field formats from DateTime to Date

[xer0x]

56 fields had their type changed in WSDL 69. Fields that would accept 2015-01-30T12:00:00 now want 2015-01-30. Currently we use Date.toISOString() to write the dateTime fields in to the XML. We'll need to conditionally chop off the time when appropriate. IF we want to be able to send Date objects into XML without setting them to the appropriate string first.