there were a lot of dumb things in Ingest() that made it really slow.
Like re-hashing the tx a bunch of times. And re-saving it to the
db redundantly.
also added local bloom filters. Maybe some concurrency issues if you
generate an address just as you're getting a tx with that address but
that doesn't seem like a real problem. Cheap to rescan anyway.
So it's faster and works better.
It doesn't work; can ingest out of order within a block,
so if a block has gain then loss, you might read it as loss
then gains, missing the loss.
Also, tryna implement p2wpkh
seems to go a little faster but not much.
making ingest tx take a slice of txs would be faster probably.
but it seems network i/o is the limiting factor so maybe it's OK
seems to work OK. Could be sped up by local filters instead of
ingesting every tx from the block but I can do that later if
performance (mostly disk i/o) is an issue
once multiple connections are implemented, hard mode should forward
txs to blend in.
