nginx-acme-0.3.0

[bavshin-f5]

Checklist:

• documentation: Documented acme preferred_chain and profile directives. nginx.org#205
• testing (https://github.com/nginx/nginx-acme/wiki/Compatibility)

[Copilot]

Pull Request Overview

This PR releases version 0.3.0 of nginx-acme, updating version metadata and improving documentation clarity. The release adds support for preferred certificate chains and certificate profiles.

Key Changes:

• Version bump from 0.2.0 to 0.3.0 in Cargo.toml
• Addition of changelog entries documenting new features and bugfixes in version 0.3.0
• Documentation improvements for the preferred_chain and profile directives

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Updates package version to 0.3.0
CHANGELOG.md	Adds comprehensive changelog entry for version 0.3.0 with features and bugfixes
README.md	Improves clarity of preferred_chain and profile directive documentation

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[xeioex]

LGTM.