update path channel, link payload, ssh

Author: quartzjer

v3.md

@@ -28,6 +28,7 @@ V3 Proposal Changelog
   * TLS
   * Tor
   * I2P
+  * SSH
   * make use of NAT-PMP / UPnP to increase direct connectivity
   * push notifications
   * BLE
@@ -44,8 +45,9 @@ V3 Proposal Changelog
   * supports discoverable/pairing mode for local transports
 * channel changes
   * seek is not used
-  * link does not contain `see` or `seed` and is not used to a router, only for mesh connections
+  * link does not contain `see` or `seed` and is not used to a router, only for mesh connections, contains optional payload packet
   * peer/connect is simple packet relay, always reflects back recipients visible path, can include token to signal/create bridge
+  * path, udp=>udp4/udp6, tcp=>tcp4/tcp6
 
 
 ### DHT