chore: release v0.19.1

[hugrbot]

🤖 New release

• hugr-model: 0.19.0 -> 0.19.1 (✓ API compatible changes)
• hugr-core: 0.15.3 -> 0.19.1 (⚠ API breaking changes)
• hugr-llvm: 0.15.3 -> 0.19.1 (⚠ API breaking changes)
• hugr-passes: 0.15.3 -> 0.19.1 (✓ API compatible changes)
• hugr: 0.15.3 -> 0.19.1 (⚠ API breaking changes)
• hugr-cli: 0.15.3 -> 0.19.1 (✓ API compatible changes)

⚠ hugr-core breaking changes

--- failure feature_missing: package feature removed or renamed ---

Description:
A feature has been removed from this package's Cargo.toml. This will break downstream crates which enable that feature.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#cargo-feature-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.40.0/src/lints/feature_missing.ron

Failed in:
  feature hugr-model in the package's Cargo.toml
  feature model_unstable in the package's Cargo.toml

--- warning pub_api_sealed_trait_became_unconditionally_sealed: public API sealed trait became unconditionally sealed ---

Description:
A public API sealed trait has become unconditionally sealed, blocking all downstream implementations including those from first-party crates that rely on the non-public API.
        ref: https://rust-lang.github.io/api-guidelines/future-proofing.html#sealed-traits-protect-against-downstream-implementations-c-sealed
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.40.0/src/lints/pub_api_sealed_trait_became_unconditionally_sealed.ron

Failed in:
  trait hugr_core::std_extensions::collections::static_array::StaticArrayOpBuilder in file /tmp/.tmp6vIMH5/hugr/hugr-core/src/std_extensions/collections/static_array.rs:345

--- warning unconditionally_sealed_trait_became_pub_api_sealed: unconditionally sealed trait became public API sealed ---

Description:
An unconditionally sealed trait has become sealed only at the public API level, allowing all downstream crates to implement it via non-public API, bypassing SemVer guarantees.
        ref: https://rust-lang.github.io/api-guidelines/future-proofing.html#sealed-traits-protect-against-downstream-implementations-c-sealed
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.40.0/src/lints/unconditionally_sealed_trait_became_pub_api_sealed.ron

Failed in:
  trait hugr_core::std_extensions::ptr::PtrOpBuilder in file /tmp/.tmp6vIMH5/hugr/hugr-core/src/std_extensions/ptr.rs:177

⚠ hugr-llvm breaking changes

--- failure trait_missing: pub trait removed or renamed ---

Description:
A publicly-visible trait cannot be imported by its prior path. A `pub use` may have been removed, or the trait itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.40.0/src/lints/trait_missing.ron

Failed in:
  trait hugr_llvm::utils::array_op_builder::ArrayOpBuilder, previously in file /tmp/.tmpFahnJI/hugr-llvm/src/utils/array_op_builder.rs:10
  trait hugr_llvm::utils::ArrayOpBuilder, previously in file /tmp/.tmpFahnJI/hugr-llvm/src/utils/array_op_builder.rs:10

⚠ hugr breaking changes

--- failure feature_missing: package feature removed or renamed ---

Description:
A feature has been removed from this package's Cargo.toml. This will break downstream crates which enable that feature.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#cargo-feature-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.40.0/src/lints/feature_missing.ron

Failed in:
  feature hugr-model in the package's Cargo.toml
  feature model_unstable in the package's Cargo.toml

Changelog

hugr-model

0.19.0 - 2025-04-02

New Features

• Python bindings for hugr-model. (#1959)
• Remove extension sets from hugr-model. (#2031)
• Packages in hugr-model and envelope support. (#2026)
• Represent order edges in hugr-model as metadata. (#2027)

hugr-core

0.19.1 - 2025-04-25

New Features

• Export the portgraph hierarchy in HugrInternals (#2057)
• Implement Debug for generic Wires (#2068)
• Add ExtensionOp helpers (#2072)
• ReplaceTypes: handlers for array constants + linearization (#2023)
• move ArrayOpBuilder to hugr-core (#2115)
• [breaking] Removed model_unstable feature flag. (#2113)

hugr-llvm

0.19.1 - 2025-04-25

New Features

• move ArrayOpBuilder to hugr-core (#2115)

hugr-passes

0.19.1 - 2025-04-25

New Features

• ReplaceTypes: handlers for array constants + linearization (#2023)

hugr

0.19.1 - 2025-04-25

New Features

• Export the portgraph hierarchy in HugrInternals (#2057)
• Implement Debug for generic Wires (#2068)
• Add ExtensionOp helpers (#2072)
• ReplaceTypes: handlers for array constants + linearization (#2023)
• move ArrayOpBuilder to hugr-core (#2115)
• [breaking] Removed model_unstable feature flag. (#2113)

hugr-cli

0.15.3 - 2025-04-02

Documentation

• Add usage info to hugr-cli's rustdocs (#2044)

---

This PR was generated with release-plz.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.09%. Comparing base (8ef4afb) to head (5482248).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2079   +/-   ##
=======================================
  Coverage   83.09%   83.09%           
=======================================
  Files         219      219           
  Lines       41910    41910           
  Branches    37985    37985           
=======================================
  Hits        34825    34825           
  Misses       5274     5274           
  Partials     1811     1811           

Flag	Coverage Δ
python	85.70% <ø> (ø)
rust	82.82% <ø> (ø)

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