Merge pull request #669 from choldgraf/release_date

bumping release date

docs/source/changelog.rst

@@ -2,11 +2,27 @@
 Changelog
 =========
 
-Version 0.9.0
+
+Version x.x.x
 =============
 
 Release date: TBD
 
+New features
+------------
+
+API changes
+-----------
+
+Bug fixes
+---------
+
+
+Version 0.9.0
+=============
+
+Release date: 2019-05-05
+
 New features
 ------------
 - Support for julia `Project.toml`, `JuliaProject.toml` and `Manifest.toml` files in :pr:`595` by