🔖 Prepare release of v3.2.0 (#701)

## Description

This PR prepares the release of v3.2.0.

## Checklist:

- [x] The pull request only contains commits that are focused and
relevant to this change.
- [x] ~~I have added appropriate tests that cover the new/changed
functionality.~~
- [x] ~~I have updated the documentation to reflect these changes.~~
- [x] I have added entries to the changelog for any noteworthy
additions, changes, fixes, or removals.
- [x] I have added migration instructions to the upgrade guide (if
needed).
- [x] The changes follow the project's style guidelines and introduce no
new warnings.
- [x] The changes are fully tested and pass the CI checks.
- [x] I have reviewed my own code changes.

Author: denialhaag

CHANGELOG.md

@@ -9,6 +9,10 @@ This project adheres to [Semantic Versioning], with the exception that minor rel
 
 ## [Unreleased]
 
+## [3.2.0] - 2025-07-16
+
+_If you are upgrading: please see [`UPGRADING.md`](UPGRADING.md#320)._
+
 ### Changed
 
 - ♻️ Restructure the Python code to introduce modules ([#665]) ([**@denialhaag**])
@@ -82,7 +86,8 @@ _📚 Refer to the [GitHub Release Notes] for previous changelogs._
 
 <!-- Version links -->
 
-[unreleased]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.3...HEAD
+[unreleased]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.2.0...HEAD
+[3.2.0]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.3...v3.2.0
 [3.1.3]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.2...v3.1.3
 [3.1.2]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.1...v3.1.2
 [3.1.1]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.0...v3.1.1

UPGRADING.md

@@ -4,6 +4,8 @@ This document describes breaking changes and how to upgrade. For a complete list
 
 ## [Unreleased]
 
+## [3.2.0]
+
 With this release, the Python package has been restructured.
 In particular, the `mqt.qmap.pyqmap` module has been discontinued.
 Classes and functions can now be imported from the more descriptive `mqt.qmap.clifford_synthesis`, `mqt.qmap.hybrid_mapper`, `mqt.qmap.na`, and `mqt.qmap.sc` modules.
@@ -48,7 +50,13 @@ MQT QMAP now requires CMake 3.24 or higher.
 Most modern operating systems should have this version available in their package manager.
 Alternatively, CMake can be conveniently installed from PyPI using the [`cmake`](https://pypi.org/project/cmake/) package.
 
-[MQT SyReC]: https://github.com/cda-tum/mqt-syrec
-[unreleased]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.0...HEAD
+<!-- Version links -->
+
+[unreleased]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.2.0...HEAD
+[3.2.0]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.0...v3.2.0
 [3.1.0]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.0.0...v3.1.0
 [3.0.0]: https://github.com/munich-quantum-toolkit/qmap/compare/v2.8.0...v3.0.0
+
+<!-- Other links -->
+
+[MQT SyReC]: https://github.com/munich-quantum-toolkit/syrec