Version 0.2.0

Release Summary

Version 0.2.0 bundles all 14 improvements from phases I1-I14.

Major Features

• AsyncDecisionBinding — Async predicates for database/API calls and feature flags
• Config Diffing API — Detect configuration changes between reloads
• Performance Metrics — Track binding/spec timing data
• ConfigSchema Validation — Validate required keys upfront
• File Watcher — Auto-reload on config file changes
• Thread-Safety Audit — Comprehensive concurrency tests with sanitizers

Documentation & CI

• Enhanced async spec patterns and decoder contract docs
• YAML/TOML support examples
• Code coverage reporting in CI
• Demo app builds in CI pipeline
• Deterministic error ordering golden tests (50+ bindings)

Test Plan

• swift build -v passes
• swift test -v passes
• swiftformat --lint . passes (if available)
• Demo app builds successfully
• CI pipeline green