#110 - Use autoloader to load tcpdf
In civi's composer.json it includes a line that was intended to prevent problems with extensions that still used require statements to load tcpdf instead of the autoloader. But in drupal 8 this breaks because it then gets the wrong include_path.
This adjustment should work in all CMSs and should still work if civi removes the include-path from composer.json.
Possibly in future some day will need to update FPDI.