Changes in version 0.1.0 (2020-05-13) - Removed old dplyr. Changes in version 0.0.4 (2020-03-21) - Removed old use of 'as_data_frame'. Changes in version 0.0.3 (2017-09-07) - added () after function names in the DESCRIPTION and removed on stray extra space after a period - thanks to CRAN for the feedback. - restore unjoin_ for se - new tests Changes in version 0.0.2 - modify to use dplyr/rlang Changes in version 0.0.1 - first version of class "unjoin" and chaining - fix bug that was preventing key_col arg from working Changes in version 0.0.0.9000 - first working build