v0.6.0

Added

• sdk.klass — Statistics Norway's SSB Klass API. Browse and search classifications, inspect dated versions, list version/date/range code lists, retrieve exact codes, and use the official selectCodes code-pattern syntax.
• Correspondence tables and mappings. List correspondence-table metadata and page fixed, dated or ranged correspondence. Because Klass does not page these upstream, locally bounded pages are labelled pagination.upstreamPaged: false.
• Ambiguity-preserving municipality and county resolution. Historical codes are resolved through official change graphs; merges, splits, multiple predecessors/successors, mixed-step ambiguity, missing context and no-match outcomes are all returned explicitly — no branch is silently selected.
• Strict runtime-validated types and stable classification IDs for municipalities, counties, industry, occupations, education and three country-code systems.

No breaking changes. profiles.municipality() behaviour is unchanged. Published with npm provenance (SLSA); the registry gitHead matches this tag.