invalid char before tag content isn't caught

[renanbr]

Parser ignores non-valid characters when reading tag's content.

use RenanBr\BibTexParser\Listener;
use RenanBr\BibTexParser\Parser;

$parser = new Parser();
$listener = new Listener();
$parser->addListener($listener);
$parser->parseString('@misc{foo=)"bar"}');
$entries = $listener->export();
print_r($entries);

Expected result:

An exception saying ) character was not expected

Actual result:

Array
(
    [0] => Array
        (
            [type] => misc
            [foo] => bar
            [_original] => @misc{foo=)"bar"}
        )
)