Support for extension dialing

[shanemd]

When joining a conference call, there is often a meeting code appended to the phone number in the form of an extension. The Google dialer somehow notices this extension and when the call is answered by the remote end, prompts the user to ask if they'd like to dial the extension. This makes joining a conference call much easier. Otherwise you'd have to manually type the extension into the dialer after the call is answered, which can be quite time consuming as the codes can be long (9+ numbers). It would be wonderful if a similar feature could be added to this app. It's probably the single biggest feature I'm missing from the Google Dialer (and it might make me move back at some point).

Presumably the extension information is available in the intent that triggers a phone call, I'm not sure.

Also thank you for developing such a nice app!