- Deleted the Jenkinsfile, transitioning all CI workflows to GitHub Actions.
- Added Illumos (OpenIndiana) build and release steps to GitHub workflows.
- Created a new release pipeline triggered by version tags starting with `v`.
- Updated README with release instructions using `cargo-release`.
This pull request adds a `Run on Repl.it` badge to the `README`. This will allow users to easily run this repository in their browser, without having to set up an environment. You can learn more about Repl.it [here](https://repl.it).