v2.5.0

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Major updates

• Breaking change: starknet::Call::calldata is now a Span. Direct usages relying on it may break.
  • The change is required to vastly reduce the costs of using account contracts.
• New edition 2023_11 - introducing pub for struct members and module items.
  • Kudos to @Jinwei1987 for writing the original visibility addition code.
• Use cairofmt::skip in the formatter. #4387
• Added warnings - can be ignored in crate - and won't be affected by dependencies
  • Added warning for unhandled error types. #4454
  • Added warnings for unused variables. #4457
  • Depraction warning for external(v0) on impls. #4470
  • Added starknet ABI failures as warnings. #4493
  • Added abi failure + warning for account contract functions. #4575
  • Added warnings for bad embeddable impls. #4796
  • Added unstable and feature attributes and warnings on usage of unstable features.
    • Warning be ignored using feature("feature_name") on an expression wrapping the usage.
    • unstable specifically added for SafeDispatchers usage.
• Experimental feature for negative impls.
• Fixed get_dep_component inline macro. #4742

New Features

• Added Bits<T> in num module by @akhercha in #4251
• Added more data for missing method diagnostic. #4405
• Added assert_ne! test macro by @clint419 in #4424
• Adding snapshot forwarding. #4430
• Adding must_use annotation for types and functions.
• support for match out of order for enums. #4536
• Added Debug derive for various corelib types.
• support for otherwise pattern in match for enums. #4557
• support for match on true/false in parser and semantic. #4559
• Added Store impl for ByteArray. #4596
• Added while loops.
• Add bool::then_some function by @LucasLvy in #4529
• Add support for match on none felt252 numeric values. #4764
• Added Serde, Store, PartialEq, Debug and Display for NonZero. #4795
• Added PartialOrd for ContractAddress. #4863

Bug fixes

• Fix attribute parsing with only an identifier after. #4407
• Made auto-available traits be prelude based. #4410
• Made contract address calculation deterministic by @enitrat in #4391
• Fixed deploy syscall address registry by @enitrat in #4489
• Avoid Not a trait. diagnostic if a diagnostic was already reported. #4477
• Added error for nopanic cycles. #4643
• Added breaking of stack if no longer holding a var as temp. #4777

Optimizations

• Improve Span deserialization. #4595
• Better performance of is_empty. #4715
• Add return optimizations - if a value is ready for function return early - it is returned early - reducing many extra writes.
• Pass Call::calldata as a Span. #4620

Others

• Update linear-types.adoc by @Akare123 in #4508
• fix: several links pointing to legacy repository uri by @krauspt in #4568
• Update match-expressions.adoc by @AdventureSeeker987 in #4607
• fix: minor typos by @tudorpintea999 in #4500

New Contributors

• @clint419 made their first contribution in #4378
• @akhercha made their first contribution in #4251
• @dedushky made their first contribution in #4388
• @Akare123 made their first contribution in #4508
• @krauspt made their first contribution in #4568
• @AdventureSeeker987 made their first contribution in #4607
• @tudorpintea999 made their first contribution in #4500

Full Changelog: v2.4.3...v2.5.0