startOf things should not be endOf things

[jeromesimeon]

~time.startOf is actually returning the ~time.endOf result:

clause init ( request : Request ) : TestResponse {
    let date : DateTime = dateTime("2018-01-01T12:00:00.000Z");
    set state AccordContractState { stateId: "1" };
    return TestResponse{
      startOfDay: startOf(date, "days"),
      endOfDay: endOf(date, "days")
    }
  }

Returns:

"response": {
  "startOfDay": "2018-01-01T23:59:59.999Z",
  "endOfDay": "2018-01-01T23:59:59.999Z",
  "$class": "com.bp3.clause.test.startOfError.TestResponse"
 },

[jeromesimeon]

Fixed in #514, further improvements to TZ support still need to happen, see #515