Changelog

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Full Garbage Collection proposal support: recursive/sub-typed type groups, struct and array types, and GC/ref instructions.
br_on_cast / br_on_cast_fail cast immediates with source/target nullability flags.
GC array operations: array.new, array.new_default, array.new_fixed, array.new_data, array.new_elem, array.get/array.get_s/array.get_u, array.set, array.len, array.copy, array.fill, array.init_data, array.init_elem.
GC/ref valtypes and reference instructions: ref.null, ref.eq, ref.test, ref.cast, any/extern conversions, ref.i31, and abstract heap types.
Implicit func types for untagged functions, reusing declared top-level types only (explicit rec-group types are never reused, matching the reference encoder).
Named struct field index resolution.

Element and table segment encoding aligned byte-for-byte with wasm-tools.
Type-section encoding for recursive groups, sub types, and final-subtype markers aligned with wasm-tools.
Full spec-suite parity: all 5,146 official spec vectors now pass against the pinned wasm-tools 1.255.0 reference, with no remaining known failures.
The spec-test harness now treats fail/ vectors that wasm-tools validates as valid as byte-parity cases instead of expecting invalidity.

wasm-tools (bytecodealliance) as the spec-test reference encoder and validator, replacing the previous scratch tooling.
Leading type-use blocktypes; else is always emitted explicitly for if.

Aligned element-section, import, table, and element/reftype encoding with wasm-tools output.
Reduced the known-failure count substantially across the spec-suite vectors.

Watusi.Patcher for binary patching of pre-compiled WASM templates (data segments and global initializers).

Fixed-width SIMD extension and endianflip test coverage.
Threads/Atomics extension, sign-extension operators, and the name custom section.
Multi-value blocks and Tail Calls.
Reference Types support with dbg-stories samples.
Inline import support and expanded SIMD instruction coverage.