Initial release HARP sample code and example data

Initial release of sample code (in R) and example data to calculate and visualise the HARP metrics. For details of the HARP metrics refer to Melanie E. Roberts, Donghwan Kim, Jing Lu, & David P. Hamilton (2023), HARP: A suite of parameters to describe the hysteresis of streamflow and water quality constituents, Journal of Hydrology, doi: 10.1016/j.jhydrol.2023.130262.

Cite this code using doi: 10.5281/zenodo.8409091