giscoR 1.3.0

• Cached downloads now preserve the previous file when an update fails and replace it only after the new download completes successfully.
• Logical flags now reject missing and non-scalar values with a giscoR_error condition.
• Downloads now attempt the requested GISCO resource directly instead of relying on a generic connectivity check, improving support for proxied connections (#139).
• gisco_address_api_most_populated_cell() retrieves the most populated census grid cell for a province or city, preserving the API coordinates in numeric X and Y columns of a tibble.
• gisco_address_api_search() now supports freeform address searches with the q argument.
• ?gisco_db is updated.
• gisco_get_units() now forwards cache_dir to its replacement single-unit download function.
• gisco_id_api_*() functions with an epsg argument now send it as proj, honoring the input and output CRS, and gisco_id_api_nuts() sends nuts_level as level, honoring the requested NUTS level.

What's Changed

• Fix GISCO connectivity checks by @dieghernan in #140
• Add GISCO API features and fixes and refresh documentation by @dieghernan in #141

Full Changelog: v1.2.0...v1.3.0