Test that hsc2hs works with promoted data constructors
Requested by @RyanGlScott on a pull request for hsc2hs. I thought that the hsc2hs submodule had already been bumped, but I had to bump it here.
Requested by @RyanGlScott on a pull request for hsc2hs. I thought that the hsc2hs submodule had already been bumped, but I had to bump it here.