* I have no idea now LPat and Pat previously managed to unify...
* Avoid using unRealSrcSpan as its only introduced for GHC 8.8
* Add some CPP to permit compiling with GHC 8.6
* Permit CPP in one more place
* Add two failing getDispatchEnv tests.
* Fix getDispatchEnv idempotency.
* Fix new test formatting.
* Make getDamlAssistantPath look in env first.
* Fix daml env var overriding.
* Test all the Nothing cases of env var dispatching.
* Fix dispatchEnv and getDamlEnv for Nothings.
* Add hlint rule to avoid future setEnv debacles.
* Fix other uses of setEnv.
* Fix type error.
* Fix reviewer comments
* setEnv comment
* Delete an entirely unused module
* Delete an entirely unused module
* Switch the compiler to use EUnit over mkEUnit
* Delete an unused module
* Whitespace only
* Clean up the API for World, don't expose the internals, better creation functions
* Clean up the type checker environment, don't expose the internals of Gamma, add a few helper functions
* Delete unused functions
* Explicit module export lists
* Fix the nub replacement hints
* Turn on the warning that we require module export lists
* Add an explicit export list
