Fix incorrect prefix for "Prepared block for proposing at" (#305)

* Fix incorrect prefix for "Prepared block for proposing at"

* Update Substrate & Polkadot

* Fix quotes & codec

* WIP

* Fix logger rename

* Revert "WIP"

This reverts commit af2fe967bb5841a55024783dbccf6c75cba6ab1a.

* WIP

* CLEANUP

* Working state

* WIP

* WIP