Merge pull request #301 from morphismtech/dev

Version 0.8

.github/workflows/ci.yml

@@ -31,9 +31,9 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
-      - uses: actions/setup-haskell@v1.1
+      - uses: haskell/actions/setup@v1
         with:
-          ghc-version: '8.10.2' # Exact version of ghc to use
+          ghc-version: '8.10.5' # Exact version of ghc to use
           # cabal-version: 'latest'. Omitted, but defalts to 'latest'
           enable-stack: true
           stack-version: 'latest'
@@ -83,9 +83,9 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
-      - uses: actions/setup-haskell@v1.1
+      - uses: haskell/actions/setup@v1
         with:
-          ghc-version: '8.8.3' # Exact version of ghc to use
+          ghc-version: '8.8.4' # Exact version of ghc to use
           # cabal-version: 'latest'. Omitted, but defalts to 'latest'
           enable-stack: true
           stack-version: 'latest'
@@ -135,7 +135,7 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
-      - uses: actions/setup-haskell@v1.1
+      - uses: haskell/actions/setup@v1
         with:
           ghc-version: '8.6.5' # Exact version of ghc to use
           # cabal-version: 'latest'. Omitted, but defalts to 'latest'

README.md

@@ -294,3 +294,7 @@ in
 :}
 [User {userName = "Alice", userEmail = Just "[email protected]"},User {userName = "Bob", userEmail = Nothing},User {userName = "Carole", userEmail = Just "[email protected]"}]
 ```
+
+This should get you up and running with Squeal. Once you're writing more complicated
+queries and need a deeper understanding of Squeal's types and how everything
+fits together, check out the [Core Concepts Handbook](squeal-core-concepts-handbook.md).

RELEASE NOTES.md

@@ -1,5 +1,46 @@
 ## RELEASE NOTES
 
+### Version 0.8
+
+Thanks to Adam Wespiser, Cullin Poreski, Scott Fleischman
+and William Yao for lots of contributions.
+
+### Materialized CTEs
+
+Scott Fleischman contributed materialization support to Squeal's
+WITH statements.
+
+### LTrees and UUID
+
+New packages `squeal-postgresql-ltree` and `squeal-postgresql-uuid-ossp`
+were created to offer functionality from those Postgres extensions.
+
+### Safe Transactions
+
+Previously, Squeal transactions were "unsafe", allowing for arbitrary
+`IO`. Now, Squeal provides a new type `Transaction` that is a RankNType.
+
+```Haskell
+type Transaction db x = forall m.
+  ( MonadPQ db m
+  , MonadResult m
+  , MonadCatch m
+  ) => m x
+```
+
+A `Transaction` only permits database operations and error handling,
+no arbitrary `IO`. The class `MonadResult` is new but all of its
+methods are old and used to be constrained as `MonadIO`,
+now as `MonadResult`.
+
+Additionally, a new function `withSavepoint` was added, allowing
+for a kind of nested transactions.
+
+### Bug fixes
+
+Various bugs were fixed. Most importantly, poor asynchronous exception
+handling was ameliorated.
+
 ### Version 0.7
 
 Thanks to Samuel Schlesinger, Adam Wespiser, Cullin Poreski,