Changes in version 0.1-6                        

    o   bug fixed: potential error in case of empty sublists in dnb-data

                 Changes in version 0.1-5 (2022-05-12)                  

    o   bug fixed: dnb_advanced with limit="all" crashed

                 Changes in version 0.1-4 (2021-04-18)                  

    o   no access token required anymore!

    o   links fixed

    o   missing dependency added

                 Changes in version 0.1-3 (2019-04-10)                  

    o   parsing error fixed (changes in XML structure)

    o   improvements in clearing out and cleaning of data

                 Changes in version 0.1-2 (2018-09-15)                  

    o   toggle between hide and show url via option rdnb_show_url
	(for debugging)

    o   new function save_token to save token to file

    o   vignette update

    o   DESCRIPTION fixed for CRAN

                 Changes in version 0.1-1 (2017-02-14)                  

    o   data cleaning option added

    o   progress bar added (for limit="all" only)

    o   limitation for number of results (1-100) removed

    o   NOT-operator support added to publisher search

    o   new function "n_rec" added - get number of records

    o   new function "print_query" added - print search query

    o   other small fixes and improvements

                 Changes in version 0.1-0 (2016-03-31)                  

    o   This is the first version