title: Cannot parse MySql TImestamp with JSON
body: <p>While trying to parse the following JSON string:</p>
  
  <pre><code>{
      marketplaceId:"MKPL",
      asin:"ASIN1",
      sourceTimestamp:2013-03-19T23:38:24.054Z,
      orderId:"ORD1",
      vendorId:"SUPR1",
      warehouseId:"SEA8",
      inventoryOwnerGroup:376,
      lastUpdatedAt:2013-03-19T23:38:23.919Z,
      isHighConfidence:true,
      quantityArriving:2,
      expectedDeliveryDate:2013-03-19T23:38:23.919Z
  }
  </code></pre>
  
  <p>I get the following exception:</p>
  
  <pre><code>org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of java.sql.Timestamp out of VALUE_EMBEDDED_OBJECT token
   at [Source: N/A; line: -1, column: -1] (through reference chain: com.amazon.freshwombat.po.PurchaseRecord["lastUpdatedAt"])
      at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163)
      at org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:219)
      at org.codehaus.jackson.map.deser.std.StdDeserializer._parseDate(StdDeserializer.java:580)
      at org.codehaus.jackson.map.deser.std.TimestampDeserializer.deserialize(TimestampDeserializer.java:28)
      at org.codehaus.jackson.map.deser.std.TimestampDeserializer.deserialize(TimestampDeserializer.java:19)
  </code></pre>
  
  <p>Am I missing something? Thanks!</p>