#865 Use option key as meta key

[Craig Emery]

Terminal.app allows you to tick a check-box in the preferences that says
"Use option as meta key"
and this allows me to type M-b to navigate back a word etc
When this is enabled, M-d doesn't send a ∂ to the running programme (bash) it sends ^[d (i.e. Escape d).
Bash lets me (by default) map this to kill-word.
Other keystrokes are VERY useful in bash if I can use these mappings.
Can we have this in iTerm.app please?
It's the ONLY feature whose absence stops me using iTerm.app :-(