Upgrade to Jackson 2.6.3

Changes, core
Streaming

    #220: Problem with JsonParser.nextFieldName(SerializableString) for byte-backed parser
    #221: Fixed ArrayIndexOutOfBounds exception for character-based JsonGenerator

Databind

    #749: EnumMap serialization ignores SerializationFeature.WRITE_ENUMS_USING_TO_STRING
    #938: Regression: StackOverflowError with recursive types that contain Map.Entry
    #939: Regression: DateConversionError in 2.6.x
    #940: Add missing hashCode() implementations for JsonNode types that did not have them
    #941: Deserialization from {} to ObjectNode field causes "out of END_OBJECT token" error
    #942: Handle null type id for polymorphic values that use external type id
    #943: Incorrect serialization of enum Map key
    #944: Failure to use custom deserializer for key deserializer
    #949: Report the offending substring when number parsing fails
    #965: BigDecimal values via @JsonTypeInfo/@JsonSubTypes get rounded

Changes, data types
Guava

    #83: Generic type information for Optional wrapped generic type lost in visitor
    #84: Class not found exception in OSGi (com.fasterxml.jackson.databind.ser.impl.UnwrappingBeanPropertyWriter)
    (no separate issue): Allow use of @JsonDeserialize(contentAs=XXX) with Optional

Java 8 Date/Time

    #44: Allows users to pass a custom DateTimeFormatter for the ZonedDateTimeSerializer
    #45: Problem Deserializing java.time.OffsetTime from JSON Array

JDK8

    #13: Allow use of @JsonDeserialize(contentAs=XXX) with Optional

Changes, other modules
Afterburner

    #59: Cannot customize String deserialization behavior
    #60: Cannot read some "pretty" documents
        NOTE: actually fixed by jackson-core / #220 (see above)

Mr Bean

    #25: Should ignore static methods (setter/getter)