esp-idf-smtp 0.4.0

Lightweight SMTP client over esp_tls for esp-idf-svc in Rust
# Individual Contributor License Agreement

By signing this agreement, you agree to the following terms for your present and
future contributions to projects maintained by Sjors Robroek ("the Maintainer").

## Terms

1. **Definitions.** "Contribution" means any original work of authorship,
   including modifications or additions, submitted by you to a project managed
   by the Maintainer.

2. **Copyright license.** You grant the Maintainer a perpetual, worldwide,
   non-exclusive, no-charge, royalty-free, irrevocable copyright license to
   reproduce, prepare derivative works of, publicly display, publicly perform,
   sublicense, and distribute your Contributions and such derivative works.

3. **Patent license.** You grant the Maintainer a perpetual, worldwide,
   non-exclusive, no-charge, royalty-free, irrevocable patent license to make,
   have made, use, offer to sell, sell, import, and otherwise transfer your
   Contributions, where such license applies only to patent claims licensable by
   you that are necessarily infringed by your Contribution alone or by
   combination of your Contribution with the project to which it was submitted.

4. **Representations.** You represent that you are legally entitled to grant the
   above licenses. If your employer has rights to intellectual property that you
   create, you represent that you have received permission to make Contributions
   on behalf of that employer, or that your employer has waived such rights.

5. **Original work.** You represent that each Contribution is your original
   creation. You represent that your Contribution submissions include complete
   details of any third-party license or other restriction of which you are
   aware and which is associated with any part of your Contributions.

6. **No warranty.** Your Contributions are provided "as-is" without warranties
   of any kind.

7. **Open-source availability.** You understand that your Contributions will be
   publicly available under the project's open-source license (as stated in the
   repository's LICENSE file) and that a record of the Contribution and all
   associated information (including your sign-off) will be maintained
   indefinitely and may be redistributed consistent with the project's license.