update change log

Author: CunliangGeng

CHANGELOG.md

@@ -0,0 +1,12 @@
+# Change Log
+
+
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## 0.3.0
+
+- Added `align` to superpose a structure to a specific axis or plane
+- Added `superpose` to superpose two structures based on selections
+- Added `fetch` to download PDB file with given PDB ID
+- Updated `interface` object to take `pdb2sql` object as input

CHANGELOG.rst

@@ -5,10 +5,22 @@ Change Log
 All notable changes to this project will be documented in this file.
 This project adheres to `Semantic Versioning <http://semver.org/>`_.
 
-[Unreleased]
-************
+0.3.0
+    *****
 
 Added
 -----
 
 * Empty Python project directory structure
+
+Fixed
+=====
+
+
+
+# with overline, for parts
+* with overline, for chapters
+=, for sections
+-, for subsections
+^, for subsubsections
+", for paragraphs