opencensus-ext-django v0.3.2 release update (#734)

Author: reyang

contrib/opencensus-ext-django/CHANGELOG.md

@@ -1,9 +1,19 @@
 # Changelog
 
 ## Unreleased
+
+## 0.3.2
+Released 2019-07-26
+
+- Removed support for Django < 1.11
+  ([#694](https://github.com/census-instrumentation/opencensus-python/pull/694))
+- Allow installing with Django 2.0 and later
+  ([#697](https://github.com/census-instrumentation/opencensus-python/pull/697))
+
+## 0.3.1
+Released 2019-06-04
+
 - Make ProbabilitySampler default
-- Remove support for Django < 1.11.
-- Allow installing with Django 2.0 and later.
 
 ## 0.3.0
 Released 2019-04-24