[docs] Added changelog for 1.0.1 release

Author: pandafy

CHANGES.rst

@@ -1,6 +1,19 @@
 Changelog
 =========
 
+Version 1.0.1 [2022-07-01]
+--------------------------
+
+Bugfixes
+~~~~~~~~
+
+- Removed hardcoded static URLs which created
+  issues when static files are served using an
+  external service (e.g. S3 storage buckets)
+- Fixed `"migrate_timeseries" command stalling
+  when measurements exceeds retention policy
+  <https://github.com/openwisp/openwisp-monitoring/issues/401>`_
+
 Version 1.0.0 [2022-05-05]
 --------------------------