Bump version to 2.1.0

[hahwul]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @hahwul, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

I've created this pull request to perform a routine version bump for the project. The primary goal is to update all relevant configuration files and source code constants to reflect the new version, moving from 2.0.0 to 2.1.0. This ensures consistency across the project's metadata, documentation, and internal version tracking.

Highlights

• Project Version Update: The core change involves updating the project's version number from "2.0.0" to "2.1.0".
• Configuration File Updates: The "Cargo.toml" file, which is the manifest for Rust projects, has been updated to reflect the new version.
• Documentation Updates: The "README.md" file has been modified to reflect the new Docker image tag "v2.1.0" in its pull command examples.
• Snap Package Configuration: The "snap/snapcraft.yaml" file, used for building Snap packages, has been updated to "v2.1.0".
• Source Code Version Constant: The "src/printing/version.rs" file, which holds the internal version constant, has been updated to "v2.1.0".

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[gemini-code-assist]

Code Review

This pull request bumps the project version to 2.1.0. The version number has been updated consistently across Cargo.toml, README.md, snap/snapcraft.yaml, and a constant in the source code. While the changes are correct, there's an opportunity to improve maintainability by reducing the number of places the version is hardcoded. I've added a suggestion to derive the version from Cargo.toml in src/printing/version.rs, which will make future version bumps easier and less error-prone. A similar automation could be considered for snap/snapcraft.yaml to further centralize version management.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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