6.1.0

• Added #58: FluentDOM\Nodes\Creator::$optimizeNamespaces (default TRUE) optimizes
  namespace definitions on the created document.
• Added: FluentDOM\NamespaceResolver interface
• Added: FluentDOM\Namespaces namespace resolver implementation
• Refactored: FluentDOM\Document::namespaces() now returns a FluentDOM\Namespaces instance
• Removed: FluentDOM\Document::getNamespace() - use FluentDOM\Document::namespaces() object
• Added #62: FluentDOM\XMLReader extend XMLReader with namespace registration
• Added #63: FluentDOM\XMLWriter extend XMLWriter with namespace registration,
  workaround for repeated namespace definitions
• Added: FluentDOM\XMLReader::read() supports optional $namespaceUri parameter
• Added: FluentDOM\XMLReader::next() supports optional $name and $namespaceUri parameters
• Fixed #66: Improved Multibyte handling for HTML loader/serializer
• Added #60: FluentDOM\EntityReference