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* bugfix:Command History: Ensure aws prefix is not prepended twice in command history.
Fixes `157 <https://github.com/awslabs/aws-shell/issues/157>`__
* bugfix:Keybinding: Switching between emacs/vi keybindings now functions properly
* enhancement:Documentation: The documentation pane can now be focused and navigated.
Fixes `74 <https://github.com/awslabs/aws-shell/issues/74>`__, `159 <https://github.com/awslabs/aws-shell/issues/159>`__