FasterXML/jackson-databind — pull request #105 by fge (2012-11-13 17:44:20+00:00)
Title: Fix three FingBugs items

* The `instance` public static field of both `CalendarSerializer` and `DateSerializer` were not `final`.
* `JsonSchema` overrode `.equals()` but not `.hashCode()`.
* `SerializerCache.TypeKey` class' `.equals()` did not check for `null` nor its argument's class.