Changes in version 0.2.0 (2026-02-15)                  

New modules

  - CNES (National Health Facility Registry): Health facility data from
    DATASUS FTP as .dbc files (2005-2024). 13 file types (ST, LT, PF,
    DC, EQ, SR, HB, EP, RC, IN, EE, EF, GM), monthly data per UF.

  - SINAN (Notifiable Diseases Surveillance): Disease notification
    microdata from DATASUS FTP as .dbc files (2007-2024). 31 diseases
    including DENG, CHIK, ZIKA, TUBE, HANS, HEPA, MALA, and more.

  - SI-PNI (National Immunization Program): Aggregated vaccination data
    from DATASUS FTP as .DBF files (1994-2019), plus individual-level
    microdata from OpenDataSUS CSV (2020-2025). Transparent year-based
    routing between sources.

  - SISAB (Primary Care Health Information): Coverage indicators from
    the relatorioaps REST API. 4 report types (aps, sb, acs, pns) at 4
    geographic levels (brazil, region, uf, municipality).

  - ANS (Supplementary Health): Beneficiary, complaint, and financial
    data from the ANS open data portal. Plus ans_operators() for
    operator registry.

  - ANVISA (Health Surveillance): Product registrations,
    pharmacovigilance, hemovigilance, technovigilance, and controlled
    substance sales (SNGPC) from the ANVISA open data portal. 14 data
    types total.

  - POF (Household Budget Survey): Food security, consumption, and
    health expenditure microdata from IBGE FTP
    (2002-2003, 2008-2009, 2017-2018).

  - PNADC (PNAD Continua): Health-related supplementary modules from
    PNAD Continua (deficiencia, habitacao, moradores, APS).

  - PNS (National Health Survey): Microdata and SIDRA tabulated data
    (2013, 2019).

  - Censo Demografico: Population denominators from the IBGE SIDRA API,
    covering Census years 1970-2022 and intercensitary
    estimates 2001-2021.

Performance improvements

  - Hive-style partitioned parquet caching for all DATASUS modules.

  - Lazy evaluation with lazy = TRUE and backend = "arrow" or "duckdb"
    for out-of-memory queries.

  - Parallel downloads via .map_parallel() (furrr when configured, purrr
    fallback).

  - Download progress bars for all modules using
    cli::cli_progress_bar(). Shows spinner, current/total count,
    progress bar, and estimated time remaining (ETA) during multi-file
    downloads.

  - Concurrent HTTP downloads for SI-PNI multi-month CSV requests via
    curl::multi_download().

  - Resumable HTTP downloads via Range headers for large files.

  - Smart type parsing (parse = TRUE) for all 7 DATASUS modules, with
    automatic numeric and date column conversion. Use col_types for
    fine-grained control or parse = FALSE for all-character.

Refactoring

  - Extracted shared helpers for validation, search, cache management,
    and return logic, eliminating ~1100 lines of duplication across
    modules.

  - Reduced cyclomatic complexity across 11 high-complexity functions by
    extracting internal subfunctions. All exported and internal
    functions now have cyclomatic complexity below 15.

  - Removed deprecated flat cache migration infrastructure.

  - Moved readxl and haven from Imports to Suggests.

  - Removed unused vroom from Suggests.

Documentation

  - Added "Parallel downloads" section to all 12 *_data() help pages
    (?sim_data, ?sih_data, etc.) explaining how to enable parallel
    processing via future::plan().

  - Added "Parallel downloads" section to README with a working example.

Governance

  - Added CONTRIBUTING.md with contributor guidelines.

  - Added CODE_OF_CONDUCT.md (Contributor Covenant v2.1).

Breaking changes

  - Complete refactoring of VIGITEL functions due to Ministry of Health
    website restructuring. Data is now distributed as a single
    consolidated file containing all years (2006-2024) instead of
    separate files per year.

  - vigitel_data() API changed: new format parameter, year defaults to
    
    NULL (all years), removed lazy/parallel/force_download parameters.

  - Removed vigitel_download() and vigitel_convert_to_parquet()
    functions.

Bug fixes

  - Fixed PNS Arrow expression error with partition filtering.
  - Fixed pns_sidra_data() unknown table warning.
  - Fixed POF dictionary parsing failure on Linux/Ubuntu.
  - Fixed SI-PNI download crash when DATASUS FTP file is missing or
    corrupted (added defensive file.exists() guard before file.size()
    check).

                 Changes in version 0.1.1 (2026-02-04)                  

Changes

  - Moved arrow package from Imports to Suggests for better
    cross-platform compatibility. The package now checks for arrow
    availability and provides informative error messages with
    installation instructions when needed.

  - Added cache_dir parameter to all data fetching functions
    (vigitel_data(), vigitel_download(), vigitel_variables(),
    vigitel_dictionary(), vigitel_cache_status(),
    vigitel_clear_cache()). This allows using tempdir() for temporary
    storage that doesn't persist after the R session.

  - Updated examples to use cache_dir = tempdir() to avoid leaving files
    on the system during CRAN checks.

                 Changes in version 0.1.0 (2026-02-03)                  

healthbR 0.0.0.9000

New features

  - vigitel_years() - list available VIGITEL survey years
  - vigitel_variables() - list variables available in a specific year
  - vigitel_dictionary() - get the data dictionary with variable
    descriptions
  - vigitel_data() - download and load VIGITEL data with multiple
    options:
      - Support for single or multiple years
      - Automatic caching to avoid repeated downloads
      - Parquet conversion for faster subsequent loads
      - Parallel downloads with furrr
      - Lazy evaluation with Arrow for memory-efficient processing
  - vigitel_convert_to_parquet() - convert cached Excel files to Parquet
    format

Performance

  - Parquet format support for 10-20x faster data loading
  - Parallel download support via furrr package
  - Lazy evaluation via Arrow for processing large datasets without
    loading into RAM