Enhancements

Print types of missing typeclass members (#3398, @fehrenbach)
Added Prim.TypeError.QuoteLabel for pretty printing labels in custom type errors (#3436, @dariooddenino)
purs ide accepts codegen targets for the rebuild command (#3449, @kritzcreek)

Fixes

Fixes errors spans for CannotFindDerivingType (#3425, @kritzcreek)
Fixes a traversal bug where ObjectNestedUpdate was surviving desugaring (#3388, @natefaubion)
Fixes type operators reexports (#3410, @natefaubion)
Fixes ST magic-do and inlining (#3444, @natefaubion)
Fixes missing span information when using do-syntax without importing bind or discard (#3418, @natefaubion)
Fixes missing span information when shadowing an open import with a module definition (#3417, @natefaubion)
Fixes stale :browse environment after :reload (#3001, @rndnoise)

Fix test-support dependency versions and update psci browse test (#3374, @LiamGoodacre)
Changes to build with GHC 8.4.3 (#3372, @kritzcreek)
Set --haddock flag based on BUILD_TYPE (#3409, @justinwoo)
Use microlens-platform instead of lens (#3400, @joneshf)
Avoid Data.ByteString.Lazy.toStrict (#3433, @coot)
Add ffiCodegen to MakeActions (#3434, @coot)
Add nix config to stack.yaml (#3435, @f-f)