chore: bump version to 0.2.0

[Copilot]

Prepares the crate for a 0.2.0 release on crates.io.

Changes

• Cargo.toml: version 0.1.1 → 0.2.0
• Cargo.toml: Removed the deprecated bench feature flag
• CHANGELOG.md: Added complete [0.2.0] release entry with all changes from previous PRs (bench: move to dev-dependencies #1 and feat: compatibility with axallocator #2) and updated comparison links

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[AsakuraMizu]

I think it might be API compatible (probably). But since we're releasing version 0.2.0, let's just remove the useless bench feature as well.

[ZR233]

@copilot 移除 bench feature

[AsakuraMizu]

@copilot changelog不完整。之前的两个 PR 忘记更新 changelog了。

[Copilot]

Pull request overview

Updates the crate’s release metadata for the next publish, aligning the crate version and changelog with a 0.2.0 release.

Changes:

• Bump crate version in Cargo.toml from 0.1.1 to 0.2.0.
• Add a 0.2.0 section to CHANGELOG.md and update comparison links.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Updates the crate version to 0.2.0 for the release.
CHANGELOG.md	Adds the 0.2.0 release entry and updates link references for GitHub comparisons.

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[Copilot]

I think it might be API compatible (probably). But since we're releasing version 0.2.0, let's just remove the useless bench feature as well.

Done — the deprecated bench feature has been removed from Cargo.toml in ee60bfb.

@copilot 移除 bench feature

已移除 bench feature（ee60bfb）。

[ZR233]

@copilot 将 #1 #2 的改动也总结到 changelog

[Copilot]

@copilot changelog不完整。之前的两个 PR 忘记更新 changelog了。

Updated the [0.2.0] CHANGELOG entry in e1fc46c with the missing changes from PR #1 (bench dev-deps refactor, toolchain update) and PR #2 (axallocator compatibility).