b4 send support for email alias file

[Jacob Keller <jacob.e.keller@intel.com>]

Hi,

I have recently been trying to switch to using b4 as my tool for sending
patch sets. I previously used git send-email. send-email has support for
an email alias file which allows specifying shorthand nicknames for
emails and automatically translating those aliases into the full name
and email address.

Would it be possible to have b4 either handle git's email alias file? Or
perhaps have its own file/config options?

This would make it easier than needing to specify the name and email in
quotes every time when sending to common addresses.

Thanks,
Jake