Changelog

🐛 Bug Fixes

⚡️ Performance

 - Parallelize polynomial arithmetic in Bezout argument.

📚 Documentation

 - Add overview of opcode pressure, showing how much space is left
   for opcodes of a given category.
 - Fix indentation in doc comments as per Clippy's new linting
   rules.

⚙️  Miscellaneous

 - Fix pointer dereference mismatch, a new complaint from Clippy.
 - Set rustc max stack size to large enough value; required by
   v1.80.
 - Bump dependency on twenty-first to v0.42.0-alpha.7.

♻️  Refactor

 - (!) Remove generic type argument `<Hash>` from `Program`.

✅ Testing

🎨 Style
 - Uniquefy constraints with `.unique()` rather than `HashSet`.
 - Avoid interior mutability in `HashMap`, as recommended by the
   new Clippy.