Added CHANGELOG entry.

CHANGELOG.md

@@ -17,9 +17,18 @@ Current
 ### Removed:
 
 
-#### Changed:
-
-
+### Changed:
+
+[Reorganizes asynchronous package structure](https://github.com/yahoo/fili/pull/19)
+    * The `jobs` package is renamed to `async` and split into the following subpackages:
+        - `broadcastchannels` - Everything dealing with broadcast channels
+        - `jobs` - Everything related to `jobs`, broken into subpackages
+            * `jobrows` - Everything related to the content of the job metadata
+            * `payloads` - Everything related to building the version of the job metadata to send to the user
+            * `stores` - Everything related to the databases for job data
+        - `preresponses` - Everything related to `PreResponses`, broken into subpackages
+            * `stores` - Everything related to the the databases for PreResponse data
+        - `workflows` - Everything related to the asynchronous workflow
 ### Fixed: