* Initial draft, has some todos left
* remove ununsed import
* Apply suggestions from code review
* Some refactors with migration
* Fix more test and cleanup
* Fix for companion
* Apply suggestions from code review
Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>
* Update bin/node/runtime/src/impls.rs
* Fix weight
* Add integrity test
* length is not affected.
Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>