def split_iativer(version_str):
    """Split an IATIver-format version number into numeric representations of its components.

    Args:
        version_str (string): An IATIver-format string.

    Returns:
        list of int: A list containing numeric representations of the Integer and Decimal components.

    """
    integer_component = int(version_str.split('.')[0])
    decimal_component = int(version_str.split('.')[1])

    return [integer_component, decimal_component]