1.0-6 - Update to GSW-C as of 2021-07-06, github commit 9c10670e89fce906da2cebce3399d73c054e769e. - Remove dependency on the ‘testthat’ package. - gsw_z_from_p() and gsw_p_from_z() gain parameters geo_strf_dyn_height and sea_surface_geopotential. - Relax gsw_geo_strf_dyn_height() test, since values are tied to a new Matlab interpolation scheme that is not incorporated in GSW-C.

1.0-5 - Update to GSW-C 3.05-4. - Make internal sort routines be machine-independent.

1.0-4 - Update to GSW-C 3.05-3. - Handle NaN values better. - Add dozens of new GSW functions.

1.0-3 - First version, using GSW version 3.03.