Document changes back to 0.5

CHANGELOG.rst

@@ -1,4 +1,44 @@
 rbackup Changelog
 =================
 
-Version 0.6
+Version 0.5.3
+-------------
+
+* rbackup.rsync
+  * Log at the exception level, not at the library level
+* rbackup.config.config_files
+  * load_list_from_option()
+    * Use non-mutable default argument
+    * Ensure that list is returned if fallback is unset
+* rbackup.struct.repository.Repository
+  * Implement __eq__(), __ne__(), and __hash__()
+  * Update docstrings explaining what happens to snapshot_symlink when snapshot is deleted
+* Building
+  * Add sphinx build commands to setup.py
+  * Explain replacing colons on datetime on default snapshot name
+* Project Structure
+  * Move config module to config/config_files
+  * Move config files to config_files/ in root dir
+  * Delete rbackup.plugins.pacman module
+
+Version 0.5.2
+-------------
+
+* Use try..finally blocks within context manager functions
+
+Version 0.5.1
+-------------
+
+Bug Fixes
+^^^^^^^^^
+
+* backup script
+   * Fix uninitialized repo variable
+
+Version 0.5
+-----------
+
+* backup script
+  * If rsync process fails, exit by its return code
+* rbackup.struct.repository.Repository
+  * Add basic logic for updating symlink after snapshot removal