purescript/purescript v0.8.2 on GitHub

Breaking Changes

None

psc-ide is now distributed with the compiler! (@kritzcreek)
The psc-ide-server and psc-ide-client executables are now maintained and
distributed alongside the compiler. This will ensure that the externs file
format used by psc-ide-server is kept in sync with changes in the compiler.
Source maps (@nwolverson)
Source maps can be generated using the --source-maps flag. See the
example repository for a full demonstration of source maps using Webpack.
Operator aliases for data constructors (@garyb)
Aliases can now be defined for data constructors. For example:
```
data List a = Nil | Cons a (List a)

infixr 6 Cons as :
```
Here, the : operator can be used as a function to replace the Cons constructor,
and also in binders.

Eq and Ord deriving (@paf31)

Eq and Ord instances can now be derived, using the derive instance syntax:

derive instance eqList  :: (Eq  a) => Eq  (List a)
derive instance ordList :: (Ord a) => Ord (List a)

Types are now inferred in psc-docs and psc-publish (@hdgarrood)
If type annotations are missing in source files, they will be inferred by
psc-docs and psc-publish before documentation generation.
Initial version of new syntax for operator sections (#1846, @paf31)
Operator sections can now be written using underscores. For example:
```
decrementAll :: Array Int -> Array Int
decrementAll = map (_ - 1)
```
which is equivalent to:
```
decrementAll :: Array Int -> Array Int
decrementAll = map (\x -> x - 1)
```

Allow one open import without warning (@garyb)
Warnings for open imports were a pain point for some users after the 0.8 release.
This change allows a single open import without a warning. This is still safe
in the presence of dependency updates, and does not lead to ambiguity for editor
plugins searching for declaration sites.