Update CHANGELOG.md

Author: Simone Carletti

CHANGELOG.md

@@ -2,15 +2,11 @@
 
 This project uses [Semantic Versioning 2.0.0](http://semver.org/).
 
-[2020-08-13] master
----------------------------
-**Dependencies**
-- [urllib3 from 1.25.9 to 1.25.10](https://github.com/urllib3/urllib3/blob/1.25.10/CHANGES.rst)
-- [responses from 0.10.15 to 0.10.16](https://github.com/getsentry/responses/blob/master/CHANGES)
-- [dataclasses-json from 0.5.1 to 0.5.2](https://github.com/lidatong/dataclasses-json/releases)
-- [pip requirement from ~=20.1.1 to ~=20.2.2](https://github.com/pypa/pip/blob/master/NEWS.rst)
-- [marshmallow from 3.7.0 to 3.7.1](https://github.com/marshmallow-code/marshmallow/blob/dev/CHANGELOG.rst)
 
+## master
 
-[2020-07-08] Version 2.0.0
----------------------------
+- CHANGED: Dependencies update
+
+## 2.0.0
+
+Adopted public release.