* Look at the upgrade go-ahead and restriction signals
* Update Cargo.toml
* Drop old docs for validation code
* Update tests
* Fix typo
* Add doc-comments for read_optional_entry
* Add a note about ValidationData
* Introduce migration for removing unused storage entry
* Fix indentation
* Use intra-doc link syntax
* Double-check that GoAhead signal is not spurious
* fmt
* Drop commented code
* Fix typos
Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>
* Add a weight for StorageVersion write
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Chris Sosnin <chris125_@live.com>
Co-authored-by: Chris Sosnin <48099298+slumber@users.noreply.github.com>
Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>