Release v0.6.3 Multi-Provider Translation Support Features: - Add Google Gemini API support (gemini-2.5-flash, gemini-2.5-pro) - Add Anthropic Claude API support (claude-sonnet-4-5, claude-opus-4-5, claude-haiku-4-5) - Migrate config from [deepl] to [translation] section with unified provider field - Add intuitive rate limit format: 50m (RPM), 5s (RPS), or raw milliseconds - Implement automatic retry logic with exponential backoff for rate limit errors (HTTP 429/503) - Add configurable max_retries setting (default: 3) - Support inline comments in config file (api_key = value # comment) - Standardize logging with INF/WRN/ERR/SUC tags across all translators Breaking Changes: - Config section renamed from [deepl] to [translation] - New provider field required (deepl, gemini-2.5-flash, claude-sonnet-4-5, etc.) - Old [deepl] section still works with deprecation warning Bug Fixes: - Fix CI build warning for system() return value check