This release focusses on bug fixes and minor enhancements. No interface changes, or deprecations have occurred.

• TransformedPredicate - A predicate where the input object is transformed [26946]

• ReferenceMap - Changed to extend AbstractHashedMap, thus gaining a mapIterator() and subclassability
• Fast3Map - Make Serializable [27946]
• Fast3Map - Add clone() method
• MultiKey - Add getKey(index) and size() methods and make constructor public
• MultiHashMap - Add five methods to improve the API
• AbstractHashedMap,AbstractLinkedMap - Add methods to access entry methods when protected scope blocks
• Functors - Add get methods to retrieve internal state [27515]
• Functors - Add additional getInstance() methods for consistency [27856,27857]
• CollectionUtils - Add size(Object) method to find the size of various collection-like objects [27909]

• Map/BidiMap implementations only checked key and not value in entry set contains(Object) and remove(Object)
• AbstractHashedMap subclasses failed to clone() correctly [27159]
• ExtendedProperties - Close input stream in constructor [27737]

• TreeBidiMap - Add javadoc about requiring Comparable entries [26470]
• MultiKey - Add extra explanatations, examples and warnings
• MultiMap,MultiHashMap - Add extra documentation to clarify the interface and implementation
• XxxUtils - Clarify the internal workings of the predicated decorator classes [28115]