Share a core with jiter potentially

merde_json/README.md

@@ -7,7 +7,14 @@
 ![The merde logo: a glorious poop floating above a pair of hands](https://github.com/user-attachments/assets/763d60e0-5101-48af-bc72-f96f516a5d0f)
 
 Adds JSON serialization/deserialization support for
-[merde](https://crates.io/crates/merde) through the [jiter](https://crates.io/crates/jiter) crate.
+[merde](https://crates.io/crates/merde).
 
 You would normally add a dependency on [merde](https://crates.io/crates/merde)
 directly, enabling its `json` feature.
+
+## Implementation
+
+The underlying parser (including aarch64 SIMD support, bignum support, etc.) has been
+taken wholesale from the [jiter crate](https://crates.io/crates/jiter) for now.
+
+[An issue has been opened](https://github.com/pydantic/jiter/issues/139) to discuss sharing a core.