Version 0.1.3 - 2021-05-12
    * Use more useful combine_terms error message

Version 0.1.2 - 2019-06-17
    * Add characteristic_docs function
    * Add min_length argument to build_dtm function

Version 0.1.1 - 2019-01-07
    * Support non-interactive plot for terms graph
    * Fix setting language during CSV import

Version 0.1.0 - 2018-11-19
    * Initial release