Deny clippy::arithmetic_side_effects for fuel-merkle

CHANGELOG.md

@@ -10,13 +10,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 
 - [#725](https://github.com/FuelLabs/fuel-vm/pull/725): Adds more clippy lints to catch possible integer overflow and casting bugs on compile time.
+- [#729](https://github.com/FuelLabs/fuel-vm/pull/729): Adds more clippy lints to `fuel-merkle` to catch possible integer overflow and casting bugs on compile time. It also does some internal refactoring.
 
 ### Added
 
 #### Breaking
 
 - [#725](https://github.com/FuelLabs/fuel-vm/pull/725): `UtxoId::from_str` now rejects inputs with multiple `0x` prefixes. Many `::from_str` implementations also reject extra data in the end of the input, instead of silently ignoring it. `UtxoId::from_str` allows a single `:` between the fields. Unused `GasUnit` struct removed.
 - [#726](https://github.com/FuelLabs/fuel-vm/pull/726): Removed code related to Binary Merkle Sum Trees (BMSTs). The BMST is deprecated and not used in production environments. 
+- [#729](https://github.com/FuelLabs/fuel-vm/pull/729): Removed default implementation of `Node::key_size_bits`, implementors must now define it themselves. Also some helper traits have been merged together, or their types changed.
 
 ## [Version 0.49.0]