Necessary whitespace is not being preserved.

Test case: Input Pdf file is 501 German Verbs.pdf available at downloaded from https://archive.org/details/501GermanVerbs
Code:

include 'vendor/autoload.php';
$parser = new \Smalot\PdfParser\Parser();
$pdf    = $parser->parseFile('./501 German Verbs.pdf');
 
$text = $pdf->getText();
file_put_contents('./output.txt', $text);

Line 433 should begin with
ich werde sprechen
instead it is:
ichwerde sprechen

There dozens and dozens of similar lines throughout the document where "ich"--which is the German pronoun for I--is NOT followed by a whitespace character.

Reproduce the report with 501 German Verbs.pdf using vendor/autoload.php, Parser, parseFile, and getText(), then inspect the text-extraction path reached by that entry point. Compare output.txt with line 433 and the other reported occurrences; done means the whitespace after "ich" is preserved in the extracted text.