Sui 0.7.0 devnet release

Move

• Added keccak256 native function.
• Removed object version from Move structs. And renamed sui::object::Info to sui::object::UID
  • Sorry for the churn here. The intention of the Info renaming was to capture the fact that there was a unique ID alongside some other metadata. But with the removal of that metadata, this naming no longer makes much sense.
• Implemented one-time witness pattern.
  • This pattern can be used to guarantee a certain function is called at most once for a given type parameter. Thought it is highly constrained.
  • This will be used to guarantee there can be only one instance of a treasury cap for a given coin.

Tools and Ecosystem

• Explorer
  • Added go-to-definition ability in the package view.
  • Re-designed object details view, address view, and transaction details view.
• Browser Extension Wallet
  • Re-designed NFT tabs, NFT details page, and NFT transfer page.
  • Re-designed activities page.
  • Display version number in the Settings menu.
  • Optimize transferring SUI token by combining coin split and transfer into one transaction.

Sui Core

• Fixed memory leak in fullnodes.
• Fixed various bugs on validators: issues related to transfer SUI with insufficient gas balance; objects digest mismatch after a failed transaction. Improved error message clarity across the board.

Narwhal (selected Sui-relevant highlights)

• Use Task groups to make sure we do not leave a node alive with some crashed key components.
• Batch retrieval now works even when batches are identical
• The Executor retrieves needed blocks in bulk, as opposed to one-by-one, and delivers them in the order they were sequenced, as opposed to the order they were received.
• Leader election now rotates over all the leaders, rather than half the roster.