Changes in version 0.3.0 (2022-10-10) - New function 'track_grid()' to compute cell index for points for a grid. - Fixed test failing as newer R allows raw numeric input to date-time. Changes in version 0.2.5 (2021-10-12) - Patch fix for new {geosphere} >= 1.5.14, thanks to CRAN notification pretest reverse dependency checking. Changes in version 0.2.0 (2020-10-25) - New function track_query() similar to track_intermediate() but for arbitrary points in time. In-development. - New function track_intermediate() to perform interpolation along a great circle between input locations. The interpolation step may be set by distance or duration and date-time is interpolated if included. - Metres, seconds, degrees, everywhere. Changes in version 0.1.0 (2019-07-02) - Fixed Value documentation for various functions, thanks to CRAN feedback. - New functions track_time, track_speed,track_distance_to() and track_bearing_to(). - Added basic functions track_distance, track_angle, track_turn, and track_bearing.