• Add N-Triples tests for .parse_subject, .parse_object, .parse_predicate, .parse_uri, .parse_node, and .parse_literal.
• Add RDF versions to Format.
• Update N-Triples/N-Quads grammar with VERSION
• Add version option and accessor to RDF::Reader.
  • Add VERSION support in N-Triples parser, with warning when unexpected combination is used.
• allow --no-validate CLI option.
• Write VERSION declaration in N-Triples/Quads if version specified, and not canonicalizing.
• Remove support for the RDF-star CG version of quoted triples, leaving only triple terms.
• If validating, only return valid triples from N-Triples reader.
• Add N-Triples tests for ill-formed language-tagged literals and directional variations.
• When reading a URI, canonicalize when interning, rather than after the fact, to avoid a frozen object error.
• Always encode U+FFFE and U+FFFF in N-Triples/Quads.

• Don't parse quoted triples when validating.
• Make sure argument to URI.intern is a string.
• In URI#freeze, synchronize mutex before checking for frozen? This was a race condition.
• More moves towards Triple Terms vs Quoted Triples.
• Don't use Time Zone from a native value in RDF::Literal::Date, as Time Zone is optional and not included in ISO8601. Fixes #447.
• Add more special handling for URI File scheme in general, and some windows-specific code to disambiguate the drive letter from a scheme. Fixes #443.
  • Just use path if there's a file scheme. This leaves out a potential host, which isn't supported anyway.
• Link to the rdf-borsh extension (@artob).
• Fix typo in decimal.rb comments (@bivens-dev).
• short-circuiting slow inherited methods with fast ones (@doriantaylor)
• Replace StringScanner in N-Triples reader (@andyundso)
• Add whitespace to canonical triple term representation.
• Fix some XSD grammar issues for DECIMAL and DOUBLE.

• Make sure argument to URI.intern is a string.
• In URI#freeze, synchronize mutex before checking for frozen? This was a race condition.

• Fix problem parsing ill-formed URI query parameters such as "?&a".
• Don't normalize literal direction so that validation can work.
• Add check to see if subject implements supports? before using it, which isn't the case for a Writer.
• Fix documentation on RDF::Query#initialize and #execute to note that variable graph names do not match the default graph due to SPARQL semantics.
• Remove CHANGES.md
• Reference GitHub Release Notes from README.
• CI on Ruby 3.3.
• Add expllicit dependencies on base64 and bigdecimal gems.
• Fix some IRI regular expressions.
• Add support for RDF 1.2 Triple Terms and deprecation notices for RDF-star quoted triples. (provisional)
• Even though deprecated, when matching a quoted triple (<< ... >>) be sure it's not a triple term (<<( ... )>>).
• Add rdf:reifies to the RDF vocabulary.
• Implement Literal#english? to aid matching English literals. (@artob)
• Update #start_with? to match String#start_with signature. (@tpendragon)

When Mutable#load is called with a base_uri option, it takes precedence over the resource location.

• Add support for directional language-tagged strings from RDF 1.2.
• Consolidate N-Triples and N-Triples Star grammars. Use LANG_DIR terminal instead of LANGTAG.
• Removes support for legacy text/plain (as an alias for application/n-triples) and text/x-nquads (as an alias for application/n-quads)
• Cleanup RDF* nomenclature, and use :quoted_triples instead of :rdfstar for supports?.
• Add :base_direction as something supported (or not) by writeable.
• Require rdfstar option to read directional language-tagged strings.
• Add missing Statement#dup. Does not duplicate blank node components.
• Added documentation to clarify that term canonicalization is not the same as Graph/Dataset canonicalization, which is impleented in the rdf-normalize gem.
• Add Enumerable#canonicalize method, which can be overridden by rdf-normalize, which normalizes each statement in an enumerable.
• Minimum Ruby version now 3.0.

• Ruby extensions no longer necessary.
• Make Ruby warnings visible and reduce warnings.
• Updates to URI normalization. Fixes #439.

• Fix arguments to Logger.log_depth to pass depth keyword parameter to #log_depth.
• Minor update in mutable to change the way keyword argument overrides work.
• Update N-Triples/Quads ASCII escapes when writing literals based on proposed RDF 1.2 behavior.
• Fix memory leak on RDF::Util::Cache (#438 – @abrisse)

• Narrow list of valid dates/times/dateTimes based on more strict lexical representations from https://www.w3.org/TR/xmlschema11-2/#rf-lexicalMappings-datetime
• Update CLI filtered option to allow Array or Proc in addition to a single value. This allows, for example, a command to be associated with multiple formats.

• Query#execute and Pattern#execute can take a Solution for bindings, in addition to a hash. This supports passing pre-bound variables from SPARQL.
• When generating docs, add etc/doap files to yard output.
• Fix Dataset#inspect