* refactor beefy mmr
* use plain vector of bytes for leaf extra
* update comment
* update comments
* remove unused vars
* Use sp_std::vec::Vec
Co-authored-by: Adrian Catangiu <adrian@parity.io>
* make extra data generic
* fix tests
* refactor beefy-mmr
* Update frame/beefy-mmr/src/lib.rs
* minor fix
* fmt
* Update frame/beefy-mmr/src/lib.rs
Co-authored-by: Adrian Catangiu <adrian@parity.io>