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0.28.0 (2024-04-24)

⚠ BREAKING CHANGES

• Add as_array and remove _slice variants of hash functions (#4675)
• reserve keyword super (#4836)
• contract interfaces and better function calls (https://github.com/AztecProtocol/aztec-packages/pull/5687)
• change backend width to 4 (https://github.com/AztecProtocol/aztec-packages/pull/5374)
• Use fixed size arrays in black box functions where sizes are known (https://github.com/AztecProtocol/aztec-packages/pull/5620)
• trap with revert data (https://github.com/AztecProtocol/aztec-packages/pull/5732)
• acir: BrilligCall opcode (https://github.com/AztecProtocol/aztec-packages/pull/5709)
• remove fixed-length keccak256 (https://github.com/AztecProtocol/aztec-packages/pull/5617)
• storage_layout and #[aztec(storage)] (https://github.com/AztecProtocol/aztec-packages/pull/5387)
• acir: Add predicate to call opcode (https://github.com/AztecProtocol/aztec-packages/pull/5616)
• contract_abi-exports (https://github.com/AztecProtocol/aztec-packages/pull/5386)

Features

• acir_gen: Brillig stdlib (#4848) (0c8175c)
• acir: Add predicate to call opcode (https://github.com/AztecProtocol/aztec-packages/pull/5616) (2bd006a)
• acir: BrilligCall opcode (https://github.com/AztecProtocol/aztec-packages/pull/5709) (0f9ae0a)
• Add min and max functions to the stdlib (#4839) (6cfb328)
• Add NARGO_FOREIGN_CALL_TIMEOUT environment variable (#4780) (791f1c8)
• Add comptime Interpreter (#4821) (5992436)
• Add return values to aztec fns (https://github.com/AztecProtocol/aztec-packages/pull/5389) (2bd006a)
• Allow numeric generics to non inlined ACIR functions (#4834) (9cc03a4)
• avm: Integrate AVM with initializers (https://github.com/AztecProtocol/aztec-packages/pull/5469) (2bd006a)
• Brillig heterogeneous memory cells (https://github.com/AztecProtocol/aztec-packages/pull/5608) (305bcdc)
• Brillig pointer codegen and execution (https://github.com/AztecProtocol/aztec-packages/pull/5737) (0f9ae0a)
• Change backend width to 4 (https://github.com/AztecProtocol/aztec-packages/pull/5374) (0f9ae0a)
• Contract interfaces and better function calls (https://github.com/AztecProtocol/aztec-packages/pull/5687) (0f9ae0a)
• Contract_abi-exports (https://github.com/AztecProtocol/aztec-packages/pull/5386) (2bd006a)
• experimental: Add comptime keyword (#4840) (4dfd7f0)
• Get last mock oracles params (#4789) (1d96937)
• Impl of missing functionality in new key store (https://github.com/AztecProtocol/aztec-packages/pull/5750) (0f9ae0a)
• Implement Eq trait on BoundedVec (#4830) (6cefe16)
• Lalrpop lexer prototype (#4656) (25ad018)
• nargo: Handle call stacks for multiple Acir calls (#4711) (5b23171)
• Narrow ABI encoding errors down to target problem argument/field (#4798) (e412e6e)
• Proving the rollup circuits (https://github.com/AztecProtocol/aztec-packages/pull/5599) (5b352d6)
• Reserve keyword super (#4836) (d5028a6)
• Restore hashing args via slice for performance (https://github.com/AztecProtocol/aztec-packages/pull/5539) (2bd006a)
• Simplify BoundedVec::eq (#4838) (3d33a33)
• simulator: Fetch return values at circuit execution (https://github.com/AztecProtocol/aztec-packages/pull/5642) (305bcdc)
• Split backend_barretenburg into prover and verifier classes (#4769) (ce1e662)
• Storage_layout and #[aztec(storage)] (https://github.com/AztecProtocol/aztec-packages/pull/5387) (2bd006a)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5572) (2bd006a)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5619) (2bd006a)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5697) (305bcdc)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5725) (5b352d6)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5794) (0f9ae0a)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5814) (0f9ae0a)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5935) (1b867b1)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5955) (1b867b1)
• Sync from noir (https://github.com/AztecProtocol/aztec-packages/pull/5999) (1b867b1)
• Trap with revert data (https://github.com/AztecProtocol/aztec-packages/pull/5732) (0f9ae0a)
• Unroll loops iteratively (#4779) (f831b0b)
• Use fixed size arrays in black box functions where sizes are known (https://github.com/AztecProtocol/aztec-packages/pull/5620) (0f9ae0a)
• Variable length returns (https://github.com/AztecProtocol/aztec-packages/pull/5633) (305bcdc)

Bug Fixes

• ArrayGet and Set are not pure (#4783) (90ee479)
• Avoid huge unrolling in hash_args (https://github.com/AztecProtocol/aztec-packages/pull/5703) (305bcdc)
• Catch panics from EC point creation (e.g. the point is at infinity) (#4790) (645dba1)
• Don't reuse brillig with slice arguments (https://github.com/AztecProtocol/aztec-packages/pull/5800) (0f9ae0a)
• experimental: Skip over comptime functions in scan pass (#4893) (f267d42)
• Fix curve parameters for bigints (#4900) (5985e42)
• Fix panic when returning a zeroed unit value (#4797) (2ea9292)
• Issue 4682 and add solver for unconstrained bigintegers (#4729) (e4d33c1)
• Primary_message typo in errors.rs (https://github.com/AztecProtocol/aztec-packages/pull/5646) (5b352d6)
• Proper field inversion for bigints (#4802) (b46d0e3)
• Reset the noir-gates-diff report on master (#4878) (50bc325)
• Update noir-gates-diff commit to use master reference report (#4891) (4a3ffb7)

Miscellaneous Chores

• Add as_array and remove _slice variants of hash functions (#4675) (8e39706)
• Remove fixed-length keccak256 (https://github.com/AztecProtocol/aztec-packages/pull/5617) (305bcdc)