v1.1.1

Documentation

• README completely revised to match the v1.0.0 API
• Code examples now include proper error handling
• New section: Context support with cancellation and timeout examples
• New table: API Actions Reference — all action strings documented with examples
• Architecture section updated to reflect the actual package layout
• Removed incorrect gRPC claim

v1.1.0

Breaking Changes

• TrimColumnsParallel() now returns (*DataFrame, error) instead of *DataFrame
  to propagate context cancellation errors. Update callers accordingly:

  // Before
  df = df.TrimColumnsParallel()
  // After
  df, err = df.TrimColumnsParallel()

New Features

• Context support — All parallel operations now accept WithContext(ctx) option.
  Pass context.WithTimeout or context.WithCancel to cancel long-running operations.
  ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
  defer cancel()
  df, err = df.TrimColumnsParallel(cleaner.WithContext(ctx))
• Graceful shutdown — API server now handles SIGTERM/SIGINT cleanly with a 30s drain window.
• CI/CD pipeline — GitHub Actions workflow runs tests with race detector, builds binaries, and builds Docker image on every push and pull request.

Bug Fixes

• CleanDates now correctly tries the user-provided layout as the first input format candidate.
• FilterOutliersParallel now preserves original row order in the output.
• JSON/YAML/XML readers now produce deterministic column ordering (sort.Strings).
• xml.Header write error is now propagated instead of silently ignored.
• json.NewEncoder().Encode() errors in API handlers are now logged.

Security

• Fixed path traversal vulnerability in /clean-file API endpoint — file paths are now validated against the working directory.

Infrastructure

• Docker image now runs as non-root user (appuser), includes HEALTHCHECK, and follows OCI image label conventions.
• API server now sets ReadTimeout, WriteTimeout, and IdleTimeout to prevent resource exhaustion.

Tests

• Added 16 API handler tests (cmd/api/main_test.go)
• Added 11 CLI tests (cmd/cleango/main_test.go)
• CLI main() refactored into a testable runClean(args []string) error function

v1.0.0

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