Release v4.4.0

[1-Bort-1]

Bart asked for a release. Follow the release procedure in AGENTS.md §4 ("Releasing").

State as of 2026-09-07:

• Latest release is v4.3.1 (2026-09-01, gh release view).
• Only PR Give a wing's mesh and airfoil settings a home in the settings file #271 (mesh:/airfoil: settings blocks) has merged since that tag. The ## Unreleased changelog section describes exactly that and nothing else — check it again against v4.3.1...main yourself before trusting this.
• The additions are purely additive API, so the version is v4.4.0. Bart has asked for this release and named that number, so the Project.toml bump is prompted rather than on your own initiative.

What is wanted:

1. Open a PR against main that sets version = "4.4.0" in Project.toml and turns the ## Unreleased changelog header into ## VortexStepMethod v4.4.0 <merge date>. Nothing else in that PR. Bart merges it; the release waits for it.
2. If PR Take the panel normal from the quarter-chord step #273 ("Take the panel normal from the quarter-chord step") merges before you get there, it belongs in this release too: add its ### Fixed entry to the same section. Still v4.4.0. If it has not merged, do not wait on it — release on Give a wing's mesh and airfoil settings a home in the settings file #271 alone.
3. Confirm main is green and that the docs and README describe what is going out. Anything that needs changing is its own PR Bart merges, and the release waits for it — say so on the thread.
4. Then agent release: the notes go to Slack for a thumbs up before anything is registered.

[1-Bort-1]

Queued as VortexStepMethod.jl-276.