Tests for quickscript
Notice: The tests are run with whatever version of quickscript DrRacket uses.
For example, my setup consists in disabling the default quickscript collection in DrRacket
and installing a quickscript-git collection that in sync with the development branch.
quickscript-test will thus test quickscript-git, not quickscript.
This is also why the non-DrRacket-based tests (such as library.rkt) are not in quickscript-test,
because the (require quickscript) line would require a different version of quickscript.