Patch version of 2.8, released on 24-Aug-2017.

Following fixes are included.

• #1657: StdDateFormat deserializes dates with no tz/offset as UTC instead of configured timezone
• #1658: Infinite recursion when deserializing a class extending a Map, with a recursive value type
• #1679: StackOverflowError in Dynamic StdKeySerializer
• #1711: Delegating creator fails to work for binary data (byte[]) with binary formats (CBOR, Smile)
• #1735: Missing type checks when using polymorphic type ids
• #1737: Block more JDK types from polymorphic deserialization

• #94: Should _ensureRoom in ProtobufGenerator.writeString()

• #19: Multimap serializer produces wrong Schema structure

• #33: Jdk8Serializer.findReferenceSerializer() leads to StackOverflowError in 2.8.9

• #53: java.io.File is not a valid source for anyFrom()/mapFrom()