v0.3.1

> **Downloads removed on 2026-09-28.** This version is kept for its history; its installers were withdrawn. Get the current version from the [latest release](https://github.com/ingelibre/ingetrazo/releases/latest).

**Linux gets first-class installers.** Every release now ships two Linux artifacts built and smoke-tested by CI, alongside the Windows installer:

- **AppImage** — make it executable and run it (needs FUSE):
  ```
  chmod +x IngeTrazo-0.3.1-x86_64.AppImage && ./IngeTrazo-0.3.1-x86_64.AppImage
  ```
- **New: plain tarball** — no FUSE, unpacks anywhere (`/opt`, your home):
  ```
  tar -xzf IngeTrazo-0.3.1-linux-x86_64.tar.gz && IngeTrazo-0.3.1/ingetrazo
  ```

Python, Qt and the pure-Python `.skp` reader travel inside — nothing else to install. Built on ubuntu-22.04 on purpose so the binaries start on Ubuntu 22.04 and later. `--check` (new) prints what the install found and exits non-zero if anything is missing.

Also in this release:
- Sheet composer: big models no longer freeze the sheet tools.
- Repository references updated to `ingelibre/ingetrazo`.

Full details in `CHANGELOG.md`.