v0.2.0 — API refinement, clippy clean, docs update

Version 0.2.0 - 2025-08-27

This release refines the collector API, keeps the codebase clippy-clean under strict lints, and updates documentation and tests. A minor breaking change improves ergonomics and performance for recording measurements.

✨ Features

• New types: Duration, Measurement
• New functions: measure, measure_named
• New macros: time!, time_named!
• Optional std-only Collector with Stats aggregation (thread-safe; per-name stats)
• Feature flags: enabled, std, minimal, full (default = ["std","enabled"])

🐛 Bug Fixes

• Resolve Clippy warnings by adding targeted #[allow(clippy::cast_precision_loss)] and modernizing format strings, maintaining #![deny(clippy::all)] without warnings across all targets/features.
• Ensure no_std test stability by gating test_duration_display behind the std feature.

💥 Breaking Changes

• Collector::record now accepts &Measurement instead of taking it by value: pub fn record(&self, measurement: &Measurement).
  • Migration: Update call sites from collector.record(measurement) to collector.record(&measurement).
  • Rationale: Avoids unnecessary moves/clones and enables cheaper call sites.

📈 Improvements

• Update Duration Display to use inline format args (no functional change).
• Update documentation examples to version 0.2.0 and clarify feature usage (zero-overhead with default-features = false).
• Update tests and examples to the new Collector::record(&Measurement) signature.

⚠️ Deprecations

None.

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Full Changelog

Full Changelog: v0.1.5...v0.2.0