Fixed benchmark

Fixed empty message handling

Merge pull request #46 from pietercolpaert/feat-rdf12

RDF1.2 and RDF Messages support, and well-tested spec compliance

Remove test file

phpunit.yml: extend workflow to run for all major PHP versions (7.1 -…

… 8.3) (#43)

N3Lexer: allow typeIRI tokens in line mode (closes #32) (#41)

* N3Lexer: allow typeIRI tokens in line mode (closes #32)

See https://www.w3.org/TR/n-triples/#grammar-production-literal
and https://www.w3.org/TR/n-quads/#grammar-production-literal

* N3Lexer: allow blank tokens in line mode (closes #34)

Blank nodes are allowed as subjects and predicates in n-triples and n-quads -
see https://www.w3.org/TR/n-triples/#grammar-production-subject and
https://www.w3.org/TR/n-quads/#grammar-production-subject (in n-quads
also as graphs).

fixes #33 (Util::getLiteralValue() fails for multiline values) (#38)

TriGParserIterator class added providing a lazy iterator wrapper for …

…TriGParser (#36)

* TriGParserIterator class added providing a lazy iterator wrapper for the TriGParser.

* mixed type hint removed (as it is incompatible with PHP < 8)

fixed coding style issues (N3Lexer, TriGParser, TriGParserTest) (#31)

Merge branch 'development'