v2.4.2

What's Changed

• perf: eliminate allocation storms in remark attachment by @ronaldtse in #348
• feat: parallel multi-file parsing with fork worker pool by @ronaldtse in #349
• fix: never fork by default in from_files by @ronaldtse in #351
• fix: from_files progress block crashed with double schemas extraction by @ronaldtse in #352
• test: pin builder perf invariants from #348 by @ronaldtse in #350
• fix: never fork on platforms without fork support by @ronaldtse in #353
• perf: execute TODO.max-perf work set by @ronaldtse in #354
• perf: memoize fast_convert_keys subtree scans; facade hygiene by @ronaldtse in #355
• perf: close out TODO.max-perf 01-14 by @ronaldtse in #356
• perf: close out TODO.max-perf 11-14 (land the 356 close-out on main) by @ronaldtse in #357
• Relax rubyzip version restriction by @kwkwan in #359

Full Changelog: v2.4.1...v2.4.2