v0.2.0

What's Changed

Named range resolution: formulas using workbook-level defined names (SalesData, TaxRate, etc.) now resolve at classification time via calamine's defined_names() API
Unknown named ranges return #NAME? cell error instead of aborting evaluation (matches Excel behavior)
End-to-end test module consolidation (tests/end_to_end/ per-feature structure)

Full Changelog: v0.1.0...v0.2.0