Patch version of 2.9, released 12-Jun-2018.

Following fixes are included.

• #400: Add mechanism for forcing BufferRecycler released (to call on shutdown)
• #460: Failing to link ObjectCodec with JsonFactory copy constructor
• #463: Ensure that skipChildren() of non-blocking JsonParser will throw exception if not enough input

• #1328: External property polymorphic deserialization does not work with enums
• #1565: Deserialization failure with Polymorphism using JsonTypeInfo defaultImpl, subtype as target
• #1964: Failed to specialize Map type during serialization where type key type incompatibility overidden via "raw" types
• #1990: MixIn @JsonProperty for Object.hashCode() is ignored
• #1991: Context attributes are not passed/available to custom serializer if object is in POJO
• #1998: Removing "type" attribute with Mixin not taken in account if using ObjectMapper.copy()
• #1999: "Duplicate property" issue should mention which class it complains about
• #2001: Deserialization issue with @JsonIgnore and @JsonCreator + @JsonProperty for same property name
• #2015: @Jsonsetter with Nulls.SKIP collides with DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL when parsing enum
• #2016: Delegating JsonCreator disregards JsonDeserialize info
• #2019: Abstract Type mapping in 2.9 fails when multiple modules are registered
• #2023: JsonFormat.Feature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT not working with null coercion with @JsonSetter
• #2027: Concurrency error causes IllegalStateException on BeanPropertyMap
• #2032: Blacklist another serialization gadget (ibatis)
• #2034: Serialization problem with type specialization of nested generic types
• #2038: JDK Serializing and using Deserialized ObjectMapper loses linkage back from JsonParser.getCodec()
• #2051: Implicit constructor property names are not renamed properly with PropertyNamingStrategy
• #2052: CVE-2018-12022: Block polymorphic deserialization of types from Jodd-db library
• #2058: CVE-2018-12023: Block polymorphic deserialization of types from Oracle JDBC driver
• #2060: UnwrappingBeanPropertyWriter incorrectly assumes the found serializer is of type UnwrappingBeanSerializer

• #136: Fix MapWriteContext not correctly resolving union values

• #93: CBORParser does not accept "undefined value"

• #135: Infinite sequence of END_OBJECT tokens returned at end of streaming read

• #282: @JacksonXmlRootElement malfunction when using it with multiple XmlMappers and disabling annotations

• #84: Add option to allow use of platform-linefeed (YAMLGenerator.Feature.USE_PLATFORM_LINE_BREAKS)

** NEW DATATYPE!!! ***

• #29: Initial datatype module implementation for Eclipse Collections

• #65: Use DeserializationContext.handleWeirdXxxValue() for datetime deserializers

• #67: ParameterNamesModule does not deserialize with a single parameter constructor when using SnakeCase PropertyNamingStrategy

• #44: (jaxb) @XmlElements does not work with @XmlAccessorType(XmlAccessType.NONE)