Changes in version 3.0.0 (2026-05-28)                  

Major Changes

  - Functionality to create perturbed table using BigQuery including
    validation process to be able to work with large datasets in a
    Google Cloud Platform environment.

  - Generate record keys from ons_id as default where ons_id exists,
    with an option to turn it off.

Minor improvements and bug fixes

  - Created functions to generate sample microdata, ptable_10_5, and
    random record keys for testing purposes, with alternative parameters
    allowed. The sample microdata included in this package is identical
    to the sample in the python version (cell-key-perturbation).
    However, a new sample of microdata created in R with the same
    parameters would not be identical to the sample in python, due to
    differences in Random Number Generation.

  - Validation moved to a separate module with improved and additional
    validation checks.

  - Tabulation with missing values: Missing values will be included in
    the frequency table, treating missingness as a category. Added a
    check function for missing values in tabulation variables, which
    returns a warning message if any of the tabulation variables
    contains missing values and suggests to consider removing them.

  - Re-ordered columns and standardised the data type for output tables.

                        Changes in version 2.0.0                        

  - New threshold parameter added (with default of 10) for the
    create_perturbed_table function. Counts < threshold will be set to
    missing. This means that the user will not need to go through an
    additional process to suppress small counts after applying
    perturbation.

  - Warnings if any records are missing record keys and exception raised
    if percentage with record keys < 50%.

  - The 'record_key_arg' parameter renamed to 'record_key' to match the
    Python implementation.

                        Changes in version 1.0.0                        

  - First release

                     Changes in version 0.0.0.9000