chore: update changelog and bump version

maartenbreddels · maartenbreddels · commit 6add32db4c63 · 2020-05-26T16:36:12.000+02:00
diff --git a/docs/changelog.md b/docs/changelog.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.4.0 (unreleased)
+
+### Major Changes
+
+- Mimic an Output widget at the frontend so that the Output widget behaves correctly [#68](https://github.com/jupyter/nbclient/pull/68)
+
 ## 0.3.1
 
 ### Fixes
diff --git a/nbclient/_version.py b/nbclient/_version.py
@@ -1 +1 @@
-version = '0.3.1'
+version = '0.4.0-dev.0'
