Multiple headers not parsed

[daveisfera]

The parser currently goes back to ID state after CUETEXT when it should go back to HEADER so that a X-TIMESTAMP-MAP that may appear can be parsed. I tried updating the code and adding tests for this case, but I can't get it to run (I jumped back node:10 in a docker image with a Debian Buster base but it wouldn't run (appears that PhantomJS is hanging or something).

So is there a recommend way to run the tests with a current setup so I can make and test a fix for this?