Faster Sync

[NfNitLoop]

Now that I've got some "blogs" with lots of "posts", the initial sync can be a bit slow.

For example:

There's probably room to parallelize the sync more than it is already.

I think I can also walk down the list of items instead of fetching the full list then doing set comparisons. Though I doubt that's the slow part, it's probably just the latency overhead of copying items from and to a server one-by-one.

[NfNitLoop]

Another option: make the default sync not sync everything.

[NfNitLoop]

Working on this for v0.6, and it's gotten a bit better: