0.10.3 readiness

Updates the CHANGELOG.md to set the release date.

CHANGELOG.md

@@ -2,27 +2,24 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 0.10.3 - TBD
+## 0.10.3 - 2021-01-29
 
-### Added
-
-- Nothing.
-
-### Changed
 
-- Nothing.
+-----
 
-### Deprecated
+### Release Notes for [0.10.3](https://github.com/open-code-modeling/php-code-ast/milestone/23)
 
-- Nothing.
+0.10.x bugfix release (patch)
 
-### Removed
+### 0.10.3
 
-- Nothing.
+- Total issues resolved: **1**
+- Total pull requests resolved: **0**
+- Total contributors: **1**
 
-### Fixed
+#### bug
 
-- Nothing.
+ - [63: Fix invalid class namespace](https://github.com/open-code-modeling/php-code-ast/issues/63) thanks to @sandrokeil
 
 ## 0.10.2 - 2021-01-20