stable null safety release (#32)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8db2d16..222978a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 1.0.0-dev
+## 1.0.0
 
 * Migrate to null safety.
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 8211256..a51709f 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: shelf_web_socket
-version: 1.0.0-dev
+version: 1.0.0
 
 description: >-
   A shelf handler that wires up a listener for every connection.