chore: 1.0.0a1 Release

**Fixes**

- Ensure sublack integration for all project files

**Other**

- Create GitHub release on pushing git tag
- Cover all functionality with tests

CHANGELOG.rst

@@ -1,8 +1,25 @@
 1.0.0 (In Development)
 ======================
 
+1.0.0a1 (2020-06-11)
+--------------------
+
+**Fixes**
+
+- Ensure sublack integration for all project files
+
+**Other**
+
+- Create GitHub release on pushing git tag
+- Cover all functionality with tests
+
 1.0.0a0 (2020-06-08)
 --------------------
 
-- Initial release on PyPI with basic support of running pre-commit hooks in
-  VS Code / Sublime Text 3 editors
+**Features**
+
+- Initial implementation
+
+**Other**
+
+- Provide more pre-commit hooks