• (Addition) Add uniq method on iterators over objects with an as_string
  method.
  
• (Update) Added Attean::API::RepeatableIterator->size method (#89).
  
• (Update) Fix Attean::QuadModel->get_quads when called with an empty term
  set in some position.
  
• (Update) Fix utf8 handling of syntax tests in dawg test harness.
  
• (Update) Improve documentation about statement projection accessors
  (e.g. subjects) not being unique (#152).
  
• (Update) Remove AtteanX::Store::DBI which was not a real DBI store and
  was accidentally checked-in (#134).
  
• (Update) Switch UUID dependency from Data::UUID to UUID::Tiny (#145).