Change compose to send email over Cap'n Proto capability
Add hacks to get around threading problems
Change to using unix domain socket for sandstorm api
Add spk files, and update compose.py for mail implementation changes.
Update pkgdef with my key and fix up files.list
Update files.list after rebase from upstream
Change profile to be populated after initial http request

Name is set from x-sandstorm-username header, and address is from
EmailSendPort.getAddress()
Change mailpile to only log errors
Add forgotten file to sandstorm file list
Add date header
Change profile to be use with new getUserAddress method from hack-session
Add setup instructions for sandstorm forwarding
Add setting for outgoing mail to be checked at 5s intervals
Update sandstorm-files.list
Fix sandstorm hacks for changes in config.profiles