chore: release v0.4.0

[github-actions]

🤖 New release

• tket-json-rs: 0.3.1 -> 0.4.0 (⚠️ API breaking changes)

⚠️ tket-json-rs breaking changes

--- failure enum_missing: pub enum removed or renamed ---

Description:
A publicly-visible enum cannot be imported by its prior path. A `pub use` may have been removed, or the enum 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/v0.30.0/src/lints/enum_missing.ron

Failed in:
  enum tket_json_rs::circuit_json::OpBox, previously in file /tmp/.tmpVNdz4z/tket-json-rs/src/circuit_json.rs:67
  enum tket_json_rs::circuit_json::ToffoliBoxSynthStrat, previously in file /tmp/.tmpVNdz4z/tket-json-rs/src/circuit_json.rs:302

--- failure struct_missing: pub struct removed or renamed ---

Description:
A publicly-visible struct cannot be imported by its prior path. A `pub use` may have been removed, or the struct 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/v0.30.0/src/lints/struct_missing.ron

Failed in:
  struct tket_json_rs::circuit_json::BoxID, previously in file /tmp/.tmpVNdz4z/tket-json-rs/src/circuit_json.rs:58
  struct tket_json_rs::circuit_json::PauliStabiliser, previously in file /tmp/.tmpVNdz4z/tket-json-rs/src/circuit_json.rs:51

Changelog

0.4.0 (2024-04-08)

Bug Fixes

• Add missing OpTypes (#37)

Miscellaneous Tasks

• [breaking] Update pyo3 to 0.21 (#33)

Refactor

• Move OpBox to a new module (#35)

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This PR was generated with release-plz.