Changes in version 0.1.6 (2026-05-30)                  

Security fixes

  - generate_pw(): switched from Mersenne Twister to a cryptographically
    secure RNG (openssl::rand_bytes).
  - write_parquet(): DuckDB errors no longer leak raw encryption key
    material in messages.
  - write_rcdf_parquet(): plaintext temp table is now always removed
    after a shared-connection write.
  - write_rcdf_as(): replaced eval(parse()) dispatch with a safe
    named-list of function references.
  - hex_to_raw(): added strict input validation (type, length, character
    set).

Performance enhancements

  - write_parquet() / write_rcdf_parquet(): removed httpfs overhead;
    shared DuckDB connection across writes; default compression changed
    to zstd.
  - read_rcdf(): new lazy = TRUE option for DuckDB-backed lazy reads;
    n_threads for parallel I/O; duplicate PRAGMA calls deduplicated per
    connection.
  - add_metadata(): label assignment vectorised with batch update.
  - open_duckdb_connection(): no longer forces single-threaded mode.

Bug fixes

  - collect.rcdf_tbl_db(): fixed infinite-dispatch recursion; NULL
    metadata no longer causes an error.
  - read_parquet(): unencrypted early-return path now correctly applies
    metadata and as_arrow_table.
  - normalize_key_value(): hex keys no longer misidentified as base-64.

Documentation

  - Main vignette rewritten for general/non-technical users with a
    step-by-step workflow.
  - Merging vignette completed and fixed.

                 Changes in version 0.1.5 (2026-03-07)                  

Feature and update

  - Added encrypt_value() and decrypt_value() functions, respectively,
    to encrypt and decrypt string using RSA.
  - Changed "dot env" (.env) reader from read_env() to read_dot_env().

Bug fix

  - Fixed bugs not returning metadata attributes using either
    read_rcdf() and get_rcdf_metadata().

                 Changes in version 0.1.4 (2026-03-03)                  

Features

  - Added get_attr() to retrieve attribute/s from RCDF object.
  - Added read_parquet_tbl() to read encrypted Parquet file and return
    as lazy data from DuckDB connection.

Breaking change

  - Removed pre_collect argument in read_rcdf()

Enhancements

  - Improved SQL query string interpolation for all DuckDB related
    codes.

                 Changes in version 0.1.3 (2026-02-12)                  

  - Added merge_rcdf() function to combine multiple RCDF files with
    different encryption keys into one.
  - Updated read_rcdf() to allow reading of multiple RCDF file with
    different encryption keys.
  - Added pre_collect argument to read_rcdf() to allow lazy loading the
    RCDF object.

                 Changes in version 0.1.2 (2025-12-03)                  

  - Fixed #14

                 Changes in version 0.1.1 (2025-10-12)                  

  - Added a NEWS.md file to track changes to the package.