• (Addition) Add new trie-based Memory2 store implementation.
  
• (Addition) New RDF 1.2 and SPARQL 1.2 support.
  
• (Update) Add Attean::API::DateTimeLiteral->equals and add support for
  special 24:00:00 xsd:dateTime format.
  
• (Update) Add Attean::API::QuadIterator->as_triples method.
  
• (Update) Add Attean::API::TermIterator->get_boolean and improve boolean
  serialization tests.
  
• (Update) Add matches method to Attean::API::TriplePattern and
  Attean::API::QuadPattern.
  
• (Update) Add tests for xsd:dateTime handling in
  Attean::API::NumericLiteral.
  
• (Update) Fix Attean::API::MutableModel->load_urls_into_graph_with_base
  to rename bnode labels per document.
  
• (Update) Fix SPARQL and Turtle parsing bug on perl 5.18.
  
• (Update) Fix SPARQL parser to allow multiple HAVING conditions.
  
• (Update) Fix TestIDPQueryPlanner to accurately mimic document-scoped
  bnodes in federation tests.
  
• (Update) Fix bug in SimpleQueryEvaluator handling of empty aggregation
  with grouping.
  
• (Update) Fix bug that was not allowing fourth flags argument to REPLACE
  function.
  
• (Update) Fix bugs in string and casting expression function evaluation.
  
• (Update) Fix bugs relating to VALUES clauses.
  
• (Update) Fix dataset definition in queries using FROM NAMED.
  
• (Update) Fix handling of NPS with inverted predicates in
  SimpleQueryEvaluator.
  
• (Update) Fix handling of VALUES in ASK and aggregation SELECT queries.
  
• (Update) Fix handling of fresh bnodes during CONSTRUCT template
  instantiation in SimpleQueryEvaluator.
  
• (Update) Fix handling of solution modifiers in CONSTRUCT queries.
  
• (Update) Fix handling of zero-length property paths in both simple and
  plan-based evaluation.
  
• (Update) Fix plan-based GROUP_CONCAT to drop language-tag data in
  aggregate result.
  
• (Update) Fix plan-based evaluation of DISTINCT GROUP_CONCAT aggregation.
  
• (Update) Update copyright notice.