Update CHANGELOG.md for 0.4.0

CHANGELOG.md

@@ -0,0 +1,26 @@
+# [0.4]
+
+## [0.4.0]
+
+### Merged PRs
+
+#### Fixes
+* Fix bug about "has no attribute request" if x-forwarded-proto wasn't part of the web request header [#25](https://github.com/jupyterhub/ltiauthenticator/pull/25) ([@consideRatio](https://github.com/consideRatio))
+* Bump oauthlib dependency from ==2.* to >=3.0 to be compatible with JupyterHub 1.0.0 [#24](https://github.com/jupyterhub/ltiauthenticator/pull/24) ([@consideRatio](https://github.com/consideRatio))
+
+#### Maintenance
+* Add TravisCI and PyPI badges [#27](https://github.com/jupyterhub/ltiauthenticator/pull/27) ([@consideRatio](https://github.com/consideRatio))
+* CI/CD update [#26](https://github.com/jupyterhub/ltiauthenticator/pull/26) ([@consideRatio](https://github.com/consideRatio))
+* Update Readme with Moodle instructions [#20](https://github.com/jupyterhub/ltiauthenticator/pull/20) ([@rtcn2](https://github.com/rtcn2))
+* Remove python 3.4 support [#18](https://github.com/jupyterhub/ltiauthenticator/pull/18) ([@yuvipanda](https://github.com/yuvipanda))
+* Link to Canvas' external app docs. [#15](https://github.com/jupyterhub/ltiauthenticator/pull/15) ([@ryanlovett](https://github.com/ryanlovett))
+
+# [v0.3]
+This is the projects first release on GitHub even though there was some releases
+to PyPI. A lot of work was put in by pushing directly to the master branch. For
+a full list of changes only the commit history will do justice.
+
+### Merged PRs
+* Canvas ID Authentication [#7](https://github.com/jupyterhub/ltiauthenticator/pull/7) ([@samhinshaw](https://github.com/samhinshaw))
+* Canvas Implementation Instructions [#6](https://github.com/jupyterhub/ltiauthenticator/pull/6) ([@samhinshaw](https://github.com/samhinshaw))
+* Add support for forwarded protocol in headers (reverse_proxy) [#5](https://github.com/jupyterhub/ltiauthenticator/pull/5) ([@brospars](https://github.com/brospars))