Quil

[0.4.2](https://github.com/rigetti/quil-rust/compare/v0.4.1...v0.4.2) (2021-07-22)


Fix

* Unbox calibrations and waveform invocations ([49c36bf](https://github.com/rigetti/quil-rust/commit/49c36bf34a98349ab3a9f2bd2e787af676e51670)), closes [#15](https://github.com/rigetti/quil-rust/issues/15) [#11](https://github.com/rigetti/quil-rust/issues/11)

Features

- allow using instruction handler when simplifying program (395)

[0.4.1](https://github.com/rigetti/quil-rust/compare/v0.4.0...v0.4.1) (2021-07-22)


New

* support gate modifiers ([9810cb5](https://github.com/rigetti/quil-rust/commit/9810cb58fc70ac178b1fd065893be8f287010167))

Features

- Initialize `Instruction`s from a Quil string. Python `Instruction`s support the `pickle` module. (382)

[0.4.0](https://github.com/rigetti/quil-rust/compare/v0.3.0...v0.4.0) (2021-07-22)


Breaking

* remove parse_qubits and parse_variable_qubits ([c33f048](https://github.com/rigetti/quil-rust/commit/c33f048f26c7893a3ed60a6d8c2fc57a3be80f41))

Breaking Changes

- allow overriding Instruction getters (260)

Features

- Add setters for `Program` calibrations, waveforms, frames, and memory_regions (264)