WIP Add Useful.h
XXX Chop the null byte from the end of a calculated 'onion' hostname

XXX: Might break old protocol
Cache private keys in Tor::HiddenService
Add ControlChannel.proto
WIP Add Channel
WIP Add ControlChannel
WIP Connection
WIP Add Connection in Channel and ControlChannel
WIP Start implementing request/response functions in Channel
WIP Add OutboundConnector
Enable dptr inheritance in Channel
FIXUP Channel inbound approval API
FIXUP ControlChannel new inbound approval API
FIXUP Connection add age
FIXUP OutboundConnector add abort
Add purpose property to Connection
WIP ContactUser use OutboundConnector
Remove OutgoingContactSocket
XXX ContactRequestClient remove use of IncomingSocket
Update IncomingSocket