Major update - symmetric encryption, UDP hole punching, code cleanup.

Reviewed-on: #1

hub/api/db/written.go

@@ -1,12 +1,12 @@
 package db
 
-import "vppn/fasttime"
+import "time"
 
 func Session_UpdateLastSeenAt(
 	tx TX,
 	id string,
 ) (err error) {
-	_, err = tx.Exec("UPDATE sessions SET LastSeenAt=? WHERE SessionID=?", fasttime.Now(), id)
+	_, err = tx.Exec("UPDATE sessions SET LastSeenAt=? WHERE SessionID=?", time.Now().Unix(), id)
 	return err
 }