Changlog updates for PR#462

Author: kotfu

CHANGELOG.md

@@ -2,9 +2,17 @@
 * Bug Fixes
     * Fixed bug where ``preparse`` wasn't getting called
 * Enhancements
-    * Improved implementation of lifecycle hooks to to support a plugin framework
+    * Improved implementation of lifecycle hooks to to support a plugin
+      framework, see ``docs/hooks.rst`` for details.
+    * New dependency on ``attrs`` third party module
 * Deprecations
-    * Deprecated a few of the old lifecycle hook methods
+    * Deprecated the following hook methods, see ``hooks.rst`` for full details:
+       * ``cmd2.Cmd.preparse()`` - equivilent functionality available
+         via ``cmd2.Cmd.register_postparsing_hook()``
+       * ``cmd2.Cmd.postparsing_precmd()`` - equivilent functionality available
+         via ``cmd2.Cmd.register_postparsing_hook()``
+       * ``cmd2.Cmd.postparsing_postcmd()`` - equivilent functionality available
+         via ``cmd2.Cmd.register_postcmd_hook()``
 
 ## 0.9.3 (July 12, 2018)
 * Bug Fixes