Merge pull request #74 from nicholassaunders/docs/changelog-0.9.0

Add changelog entry for 0.9.0.

Author: nsaunders

CHANGELOG.md

@@ -1,5 +1,24 @@
 # Changelog
 
+* 0.9.0
+  - Node server changes:
+    - Move ```ServerOptions``` from ```Hyper.Node.Server``` to
+      ```Hyper.Node.Server.Options``` and rename to ```Options```. #40
+    - Add a ```Hostname``` newtype for ```hostname``` option. #40
+    - Use ```runAff``` instead of ```launchAff``` to correctly handle
+      asynchronous exceptions. #44
+    - In-memory session store:
+      - Fix ```put```/```delete``` bug. #53
+      - Use ```Ref``` instead of ```AVar```. #53
+      - Enable random session ID generation. #53
+    - File server: Detect content-type from file extension. #59
+    - ```Set-Cookie``` attributes #60
+  - ```Semigroup``` instance for ```Form``` type #52
+  - Upgrade to ```purescript-aff``` v5. #50, #64
+  - Migrate to PureScript 0.12. #63
+  - Upgrade dependencies. #63
+  - Add support for qualified-do syntax. #70
+  - Various documentation updates.
 * 0.8.0
   - Add `MonadAff` instance for `Middleware`
   - Add Buffer instance for `ReadableBody`