Default max gas increased to 5000 Gwei
Added a workaround for Infura users who are seeing "error getting balance: header not found".
This behaviour is due to Infura announcing it has a block, but when we request our balance in this block, the eth node doesn't have the block in memory. The workaround is to add a configurable lag time on balance update requests. The default is set to 1 but this is configurable via a new environment variable