Fixed type problems from Psalm level 2 - dont forget to follow spabby…
… at twitch.tv

Thanks for this! Will take a look over it later on :)
Coverage remained the same at 100.0% when pulling df8442642f4332a932ead131abf0a9ac1b95f908 on GeeH:geeh/psalm-level-2 into daddcfd2a6344031398b016ee207ea91f5a078b7 on Brunty:master.
Coverage remained the same at 100.0% when pulling df8442642f4332a932ead131abf0a9ac1b95f908 on GeeH:geeh/psalm-level-2 into daddcfd2a6344031398b016ee207ea91f5a078b7 on Brunty:master.
Coverage remained the same at 100.0% when pulling ec7e5e0ebdda24b5e7b80dd12450529ae402a061 on GeeH:geeh/psalm-level-2 into daddcfd2a6344031398b016ee207ea91f5a078b7 on Brunty:master.
Can this be added to travis so it runs in CI too?
I guess, do you want me to make that change as part of this PR?
@Brunty can't run as part of CI as Psalm depends on PHP 7.1 and therefore the 7.0 build fails. Would you be interested in PR that bumps to 7.3?