Alchemy eth_getLogs block window changes

[mikeshultz]

Alchemy is enforcing a largest block window of 1000 blocks for eth_getLogs requests. Right now, it looks like EventCache defaults to 10000.

This probably requires a code change. Change needs to be made and deployed before 6/22/2020.

CC: @franckc

[mikeshultz]

origin/packages/event-cache/src/EventCache.js

Line 33 in 77923e9

async function(instance, fromBlock, toBlock, batchSize = 10000) {

origin/packages/event-cache/src/EventCache.js

Line 196 in 77923e9

this.batchSize = conf.batchSize || 10000