v124

• Add Custom Descriptors support. (Fuzzing: #​7796)
• Add Stack Switching support. (Fuzzing: #​7834)
• Add Compilation Hints + Branch Hinting support. (Fuzzing #​7704)
• Build mimalloc with MI_NO_OPT_ARCH to fix Raspberry Pi 4 on Arm64. (#​7837)
• wasm-split's --multi-split mode now supports more options:
  --no-placeholders, --import-namespace, --emit-module-names,
  --emit-text, --symbolmap, and --placeholdermap. Because
  --no-placeholders is false by default and until now --multi-split didn't
  use placeholders at all, this is a breaking change. If you want to continue
  to do multi-split without placeholders, you need to explicitly specify
  --no-placeholders. (#​7781, #​7789, #​7792)
• InstrumentMemory: Allow filtering by instruction, and instrument memory.grow.
  (#​7388)
• Add support for more source map fields, "sourcesContent", "file", and
  "sourceRoot". (#​7473)
• [GC] Add a TypeRefiningGUFA pass. (#​7433)
• [C/JS APIs] Allow JS and C to read the start function of a module (#​7424)
• Add a --string-lifting pass that raises imported string operations and
  constants into stringref in Binaryen IR (which can then be fully optimized,
  and typically lowered back down with --string-lowering). (#​7389)
• Fuzzer: Improve handling of small inputs and their debugging using a new
  BINARYEN_FUZZER_MAX_BYTES env var. (#​7832)