Added hQuery\Node::dl() & hQuery\Node::text2dl() methods to parse key…

…-value lists

Unit-tests run with PHPUnit v8; Updated dependencies; Test PHP v7.3

Added guzzle example

Use iconv() instead of mb_convert_encoding() when the charset is not …

…in mb_list_encodings()

Added PSR-0 for backward compatibility

Fixed an edge case in Element::hasClass()

Alternative implementation of hQuery::_gzdecode() for PHP 5.3

Improved extracting of absolute URLs from attributes (`href` and `src`)

Throw Exception when can't decode gzipped response in hQuery::fromURL()

Version bump