Capture and preserve xterm title sequences.

Howdy!

I'd love to see incorporated into the window-like templates the ability to include the "window title" (/ "icon name") in the actual title area of the presented window-like interface. This would involve special handling for the following sequences:

• ESC]0;stringBEL — "set icon name and window title to string"

• ESC]1;stringBEL — "set icon name to string"

• ESC]2;stringBEL — "set window title to string"

For example, my shell's default window title becomes (after Zsh init and startup) [email protected] (10.0.1.22) - byobu — zsh