v1.3.1

Changes

• release:v1.3.1 (6168e4d)
• release: v1.3.1 (3e7debb)
• fix: stabilize transform state across repeated compilations (2409f19)
• fix: resolve stdlib base class inheritance in transform (5b9f8d2)
• fix: stabilize bs scoping and subclass serialization (1940467)
• docs: document built-in subclass overrides (31a43ce)
• test: expand custom serializer coverage (352f9e0)
• feat: support nullable custom JSON shape hints (2cc2b6e)
• feat: add JSON shape hints for custom serializers (d1ce1d9)
• feat: support explicit custom typed-array subclass overrides (615dc05)
• chore: remove stale swar string comment (a50972a)
• perf: pack unicode escape hex emission with swar (8c0e4ed)