Changelog

Package brought to CRAN-compliant structure: development artifacts moved out of the package root, MAP_FUNCTIONS_GUIDE.md and DOWNLOAD_CLASSIFICATIONS_README.md converted into vignettes (map-functions-guide, download-classifications).
pkgdown site published to GitHub Pages.
All R CMD check WARNINGs and NOTEs resolved (missing imports for magrittr, utils::object.size, data.table globals, Rd formatting issues).

download_istat_boundaries(): download ISTAT administrative boundary shapefiles (OnData/ISTAT source) with automatic caching.
list_istat_boundary_versions(): list available boundary shapefile versions.
check_boundary_updates(): check whether newer boundary versions are available.
get_cached_boundaries_info(): inspect cached boundary files.
clean_boundary_cache(): remove cached boundary files.
read_territorial_shapefile() now checks the local cache before downloading.

Classification standard downloads with version management.
Report search and discovery functionality.
Interactive territorial mapping for comuni, province, regioni, and ripartizioni, including choropleth visualization support.
Metadata management and update capabilities.

API client validates report types (DATA, PERIODO, ATTUALIZZAZIONE).
Intelligent date parameter handling for PERIODO/ATTUALIZZAZIONE reports.
Stricter parameter validation (non-NA checks) and geometry type validation (POLYGON/MULTIPOLYGON) for mapping functions.

Mapping functions correctly reject invalid geometry types instead of failing silently.

sf_to_powerbi_topojson(): convert sf data frames to Power BI-compatible TopoJSON, with automatic WGS84 transformation, geometry validation, and optional topology-preserving simplification.

Initial release.
Core API client with authentication and request handling.
Cache management for API responses.
get_situas_tables() and related functions for retrieving SITUAS territorial codes and classifications.

situas 0.5.0