Changes in version 0.2.0                        

  - Added inflation_rate() for calculating cumulative or annualised
    inflation rates between any two years
  - Added list_currencies() to show all supported currencies and their
    data coverage
  - Added round parameter to all four adjustment functions (round = 2
    default preserves backward compatibility; use round = NULL for full
    precision)
  - All adjustment functions now accept vector amount inputs
  - Refactored internal code: extracted shared helpers to eliminate 4x
    code duplication across functions
  - Added comprehensive test suite (80+ tests covering all functions,
    all 13 currencies, error handling, inverse properties, and
    vectorisation)
  - Updated data-raw/cpi_data.R to cover all 13 currencies and both CPI
    and GDP deflator series in a single script

                 Changes in version 0.1.3 (2026-03-04)                  

  - Added 5 new currencies: NZD (New Zealand), INR (India), KRW (South
    Korea), BRL (Brazil), NOK (Norway)
  - Bundled CPI and GDP deflator data for all new currencies (World Bank
    series)
  - BRL CPI coverage begins 1980; all other new series cover 1960–2024

                        Changes in version 0.1.2                        

  - Added adjust_real() for GDP deflator-based adjustment (World Bank
    NY.GDP.DEFL.ZS)
  - Bundled GDP deflator data (1960–2024) for all 8 supported currencies
  - adjust_real() accepts the same currency codes and country names as
    adjust_inflation()

                        Changes in version 0.1.0                        

  - Initial release
  - Supports inflation adjustment for GBP, AUD, USD, EUR, CAD, JPY, CNY,
    and CHF
  - Bundled CPI data from 1960–2024 for all currencies (CNY from 1986)
  - Currency codes and country names both accepted as input
    (case-insensitive)
  - Data sourced from the World Bank Development Indicators
    (FP.CPI.TOTL), rescaled to 2020 = 100