docs: Update CHANGELOG for v0.40.0 (#313)

Author: qfreewilll

.cz.toml

@@ -2,7 +2,7 @@
 name = "cz_customize"
 tag_format = "v$version"
 version_scheme = "semver"
-version = "0.39.0"
+version = "0.40.0"
 version_files = [
     "pyproject.toml:version",
     "uv.lock:version"

CHANGELOG.md

@@ -2,6 +2,20 @@
 
 # `qnexus` Release Notes
 
+## v0.40.0 (2026-02-12)
+
+
+### Added
+
+- Added cost_confidence api on jobs, hugr and qir (#312).
+
+
+### Fixed
+
+- Update nest-asyncio package (#310).
+- Use files glob search for publish-unit-test-result-action (#309).
+
+
 ## v0.39.0 (2026-01-09)
 
 

README.md

@@ -133,7 +133,7 @@ As some auth tests these manipulate environment variables they are currently run
 - Create a release branch `git checkout -b release/vx.y.z`
 - `git add` the modifications, then `git commit` and `git push` them.
 - Create a PR (title: `docs: Update CHANGELOG for vx.y.z`)
-- Ask a colleague to review the changes (should be just `CHANGELOG.md`, `pyproject.toml` and `.cz.toml`)
+- Ask a colleague to review the changes (should be just `CHANGELOG.md`, `pyproject.toml`, `.cz.toml` and `uv.lock`)
 - Squash merge the PR into `main`
 
 ### Step 2 - run the release workflow

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "qnexus"
-version = "0.39.0"
+version = "0.40.0"
 description = "Quantinuum Nexus python client."
 authors = [
     {name = "Vanya Eccles", email = "vanya.eccles@quantinuum.com"},