v1.9.11-statediff-0.0.9

This is an internal release to enable us to work with the statediffing code (v0.0.9) using go modules. This release is rebased on top of master branch go-etheruem v1.9.11.

Updates:

Statediffing service mode by which statediffs are generated and processed into IPLD objects and directly written to Postgres, this process can be configured to track the ongoing sync process and/or receive RPC requests to write diffs out at specific block heights