update

doc/design/assistant/blog/day_4__speed.mdwn

@@ -13,6 +13,7 @@ now repeated index writes are eliminated.
 ... Eliminated too far, it turns out, since it doesn't yet *ever* flush
 that queue until shutdown! So the next step here will be to have a worker
 thread that wakes up periodically, flushes the queue, and autocommits.
+(This will, in fact, be the start of the [[syncing]] phase of my roadmap!)
 There's lots of room here for smart behavior. Like, if a lot of changes are
 being made close together, wait for them to die down before committing. Or,
 if it's been idle and a single file appears, commit it immediatly, since