Updating CHANGELOG for version 0.2

Author: AxelVoitier

CHANGELOG.md

@@ -1,13 +1,15 @@
 CHANGELOG
 =========
 
-0.2.0 - XX XXXX 2020
+0.2.0 - 06 February 2020
 --------------------
 
 - Provides GenericLookup and InstanceContent, based on SetStorage. These are the first dynamic
   lookups. They are based on Netbeans' AbstractLookup, InstanceContent and ArrayStorage.
 - Lookup listeners are just simple callables now.
 - Follows PEP 561 for packages providing typing information.
+- Improved quality assurance process (using Github Workflow as CI).
+- First (proto-)documentation.
 
 0.1.0 - 18 May 2019
 -------------------