docs: init changelog

Author: chloe-renaud

CHANGELOG.md

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+# Stromae DSFR
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.4.7] - 2025-07-04
+
+### Changed
+
+- When readonly, text inputs, number inputs and suggesters are displayed as a simple text so that their readonly status is clearer to the respondents.
+- Added a data-testid to modal buttons to allow E2E health check test not to rely on button class names.
+
+### Fixed
+
+- Fixed some issues on roundabout and loop controls.
+- Removed a few forgotten developpment logs.
+
+## [1.4.6] - 2025-06-23
+
+### Changed
+
+- Improved Lunatic performance.
+- When a modality that ask for clarification is checked, automatically put a focus on the related input.
+- Improved pairwise questions display.
+- In visualization, data download now includes calculated variables.
+
+## [1.4.5] - 2025-06-12
+
+### Changed
+
+- Improved Lunatic performance.
+
+### Fixed
+
+- Do not ask for pairwise connection for individuals who do not have been filled in.
+
+## [1.4.4] - 2025-06-11
+
+### Changed
+
+- On leaving the app, the user is redirect to the portal instead of being logged out.
+
+### Fixed
+
+- Correctly compute pairwise data.
+- Correctly display max length in clarification inputs.
+- Do not redirect the user on header and footer click.
+- Do not calculate variables that are flagged to be ignored by Lunatic.
+
+## [1.4.3] - 2025-05-28
+
+### Changed
+
+- Do not update the survey state as long as no data has been filled yet.
+
+### Fixed
+
+- Correctly handle suggesters that are readonly.