refactor: drop `mut` on `HashTreeRoot::hash_tree_root`

ralexstokes / ssz-rs

Implementation of ethereum's `ssz`

Apache License 2.0

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refactor: drop `mut` on `HashTreeRoot::hash_tree_root` #151

Closed ralexstokes closed 5 months ago

ralexstokes commented 5 months ago

this was originally left mut to facilitate caching of the Merkle tree, but given it is a big ask in Rust, let's drop it and make the resulting simplifications