release v0.4.5

[jyc228]

Summary by CodeRabbit

• Bug Fixes

  • Improved the handling of child nodes in Merkle trees to ensure accurate tracking and updating.
  • Enhanced the Copy method for Merkle trees, ensuring a more reliable duplication of tree structures.

• New Features

  • Introduced new test cases to validate the integrity of Merkle trees after specific operations, such as deleting all leaves or a single leaf node.

• Refactor

  • Removed outdated logic related to a previously identified issue in Merkle tree handling, streamlining the process.

[coderabbitai[bot]]

Walkthrough

The recent updates focus on refining the Merkle tree implementation within a specific module. Key adjustments include the removal of outdated issue-related logic, enhancements in node copying mechanisms, and more robust handling of child node updates in the tree structure. Additionally, the test suite has been expanded with scenarios covering the deletion of leaves and a specific leaf node, ensuring the integrity of the Merkle tree's root hash and node structure. A utility function for deep copying tree nodes has also been introduced.

Changes

File(s)	Change Summary
trie/zk/merkle_tree.go	Removed outdated issue logic; enhanced Copy method with copyNode for rootNode.
trie/zk/merkle_tree_node.go	Adjusted SetChild logic for better child hash change detection.
trie/zk/merkle_tree_test.go	Added tests for deleting all leaves and a specific LeafNode, validating tree integrity.
trie/zk/util.go	Introduced copyNode function for recursive copying of TreeNode and its children.

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