• (Addition) Added Attean::API::TermOrVariable->apply_binding method.
  
• (Addition) Added AtteanX::Store::SimpleTripleStore.
  
• (Update) Die on attempts to add non-ground triples/quads to stores
  (#66).
  
• (Update) Fixed Attean::Algebra::Table to consume
  Attean::API::NullaryQueryTree instead of Attean::API::UnaryQueryTree.
  
• (Update) Fixed type checks performed when ATTEAN_TYPECHECK is set.
  
• (Update) Improve error reporting for unexpected EOF in
  AtteanX::Parser::SPARQL.
  
• (Update) Throwing an error when Triple or Quad objects gets passed a
  variable (#65 from KjetilK).
  
• (Update) Add planning support for DESCRIBE queries (#45).
  
• (Update) Add type checking to store get_triples and get_quads methods
  (#61).
  
• (Update) Added logging in QueryPlanner and TreeRewriter (#64 from
  KjetilK).
  
• (Update) Avoid attempting to parse empty XML documents when passed in as
  a scalar (#60).
  
• (Update) Fix Attean::CodeIterator type checking to handle non-blessed
  items properly.
  
• (Update) Fix AtteanX::Parser::RDFXML to properly use caller-supplied
  base IRI.
  
• (Update) Fix algebra generation for describe queries in SPARQL parser.
  
• (Update) Fix bug in Attean::Plan::Aggregate handling of COUNT(*)
  queries.
  
• (Update) Fix bugs in SPARQL CSV and TSV serializers.
  
• (Update) Fix sparql_tokens generation for integer and datatyped
  literals.
  
• (Update) Fixed AtteanX::Parser::SPARQL to maintain its URI::NamespaceMap
  on prefix declarations.
  
• (Update) Improve POD and test coverage (#55; #61 from KjetilK).
  
• (Update) Improve attean_parse and attean_parse including preservation of
  prefix declarations where possible.
  
• (Update) Improve regex escaping in t/algebra.t to silence warnings in
  perl 5.22.
  
• (Update) Improve use of SPARQL and Turtle token objects.
  
• (Update) Improved triple model classes to allow adding and droping
  triple store graphs.
  
• (Update) Merge code paths for canonical NTriples serializer.
  
• (Update) Preserve in-scope variables in result iterators.
  
• (Update) Serialize SPARQL/XML bindings in a stable order.
  
• (Update) Simplify cost estimation code for hash joins in
  Attean::API::QueryPlanner (#59 from KjetilK).
  
• (Update) Update SPARQL parser to die on unimplemented Update syntax.
  
• (Update) Update SPARQL/HTML serializer to implement
  AbbreviatingSerializer (#54, #63 from Zoran Varadinsky).
  
• (Update) Update turtle serializer to consume
  Attean::API::AppendableSerializer.
  
• (Update) Updated prerequisites in Makefile.PL and .travis.yml.
  
• (Update) Use Test::Modern.