What's Changed

• ci: extract out verify_tags step from publish job into its own job by @bingcicle in https://github.com/FuelLabs/sway/pull/4496
• Run cargo update by @sdankel in https://github.com/FuelLabs/sway/pull/4499
• Fixes star_import_with_reexports. by @esdrubal in https://github.com/FuelLabs/sway/pull/4498
• Add block_header_hash() function by @nfurfaro in https://github.com/FuelLabs/sway/pull/4493
• Adds support for where clauses in impl self methods. by @esdrubal in https://github.com/FuelLabs/sway/pull/3836
• Added to msg_sender to prelude and removed from swayfiles by @calldelegation in https://github.com/FuelLabs/sway/pull/4483
• Implement module privacy rules by @IGI-111 in https://github.com/FuelLabs/sway/pull/4474
• Add Option and Result variants in prelude by @IGI-111 in https://github.com/FuelLabs/sway/pull/4504
• Where clauses on impl blocks by @emilyaherbert in https://github.com/FuelLabs/sway/pull/3731
• Fix parser panic on empty file by @IGI-111 in https://github.com/FuelLabs/sway/pull/4507
• Remove leftover dbg!s by @AlicanC in https://github.com/FuelLabs/sway/pull/4509
• Fix underflow in StorageVec's insert by @IGI-111 in https://github.com/FuelLabs/sway/pull/4508
• Fix --finalized-asm output and docs by @IGI-111 in https://github.com/FuelLabs/sway/pull/4510
• add constants page to summary by @sarahschwartz in https://github.com/FuelLabs/sway/pull/4514
• Allow more than 12b (up to 18b now) stack offsets for local initialization by @vaivaswatha in https://github.com/FuelLabs/sway/pull/4515
• Inlining heuristic: return value demotion adds arg by @vaivaswatha in https://github.com/FuelLabs/sway/pull/4518
• Allow loops in predicates by @IGI-111 in https://github.com/FuelLabs/sway/pull/4526
• Fix ordering bug in U256 by @IGI-111 in https://github.com/FuelLabs/sway/pull/4527
• docs: add section comments for devrel by @sarahschwartz in https://github.com/FuelLabs/sway/pull/4531
• chore: remove leftover build.sh by @iqdecay in https://github.com/FuelLabs/sway/pull/4529
• chore: rename fn_args_layout to fn_params_layout in rustfmt.toml by @kayagokalp in https://github.com/FuelLabs/sway/pull/4530
• const-demotion locals must be loaded in same basic block as its use. by @vaivaswatha in https://github.com/FuelLabs/sway/pull/4534
• feat(forc doc): Add impl_trait representation to ItemBody by @eureka-cpu in https://github.com/FuelLabs/sway/pull/4389
• Fixes method application self mutability check. by @esdrubal in https://github.com/FuelLabs/sway/pull/4538
• Introduce unique field_id in StorageKey by @IGI-111 in https://github.com/FuelLabs/sway/pull/4537
• Goto links for LSP hover by @sdankel in https://github.com/FuelLabs/sway/pull/4539
• Parse __ptr[T] and __slice[T] by @AlicanC in https://github.com/FuelLabs/sway/pull/4522
• Fix StorageVec bugs with use of field_id by @bitzoic in https://github.com/FuelLabs/sway/pull/4543
• Update StorageBytes to use field_id over slot by @bitzoic in https://github.com/FuelLabs/sway/pull/4541
• feat(fmt): improve newline insertion when comments are in between leaf spans by @bingcicle in https://github.com/FuelLabs/sway/pull/4548
• Add links to hover documentation by @sdankel in https://github.com/FuelLabs/sway/pull/4532
• Implements where clauses for Structs and Enums. by @esdrubal in https://github.com/FuelLabs/sway/pull/4557
• Update StorableSlice function naming to match storage API by @bitzoic in https://github.com/FuelLabs/sway/pull/4562
• Use intrinsics for base integer operations by @IGI-111 in https://github.com/FuelLabs/sway/pull/4553
• Bump to 0.39.0 by @IGI-111 in https://github.com/FuelLabs/sway/pull/4568

Breaking changes

• Module privacy rules are changing to the ones described in RFC0008. The new behavior can be enabled with a flag. Code that doesn't respect the rules will still compile by default in this version. A warning will be emitted if the flag isn't enabled, and the new behavior should be made the default in the next version
• New reserved keywords: __ptr and __slice
• StorableSlice functions have been renamed to match the storage API
• new intrinsics have been added in a way that breaks IR compatibility

Full Changelog: https://github.com/FuelLabs/sway/compare/v0.38.0...v0.39.0