feat(package): modernize package metadata, exports, and typed country dataset coverage

changelog.md

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+# Changelog
+
+## 2026-05-01 - 1.1.0 - feat(package)
+modernize package metadata, exports, and typed country dataset coverage
+
+- add an exported ICountryCode interface and type the countryCodeArray dataset
+- add meaningful tests for dataset size and Germany country metadata
+- define package exports and refresh build, test, and documentation tooling configuration
+- update README and project metadata for clearer package usage and release configuration
+
+## 2024-05-29 - 1.0.4 - maintenance
+Repository metadata and configuration updates.
+
+- Updated package description
+- Adjusted TypeScript configuration
+- Updated npmextra.json git host settings
+- Includes routine maintenance changes across 2024-03-30 to 2024-05-29
+
+## 2023-10-21 - 1.0.3 - core
+Core update fix release.
+
+- Applied `fix(core): update`
+
+## 2023-10-21 - 1.0.2 - core
+Core update fix release.
+
+- Applied `fix(core): update`
+
+## 2023-10-21 - 1.0.1 - core
+Core update fix release.
+
+- Applied `fix(core): update`