<Return> in a command should be recognized as a key

Hello,

Currently, it is possible to do this: map I feedkeys ':exec example_script &<Return>'

But you can't do this: map I focus_inputbar ':info<Return>' since <Return> will then be simply displayed in the input bar, instead of being recognized as the "Return" key.

This would allow to bind several commands that can't be bound for the moment, such as :info, :bmark, etc. and would thus solve #85.

Thanx for any help!