CRAN Release 2.1.0

The following new Whitebox Tools functions are available in whitebox v2.1.0. See https://www.whiteboxgeo.com/whitebox-geospatial-news/ for details.

• wbt_accumulation_curvature()
• wbt_curvedness()
• wbt_dbscan()
• wbt_difference_curvature()
• wbt_gaussian_curvature()
• wbt_gaussian_scale_space()
• wbt_generalize_classified_raster()
• wbt_generalize_with_similarity()
• wbt_generating_function()
• wbt_geomorphons()
• wbt_horizontal_excess_curvature()
• wbt_knn_classification()
• wbt_knn_regression()
• wbt_lidar_shift()
• wbt_local_hypsometric_analysis()
• wbt_local_quadratic_regression()
• wbt_logistic_regression()
• wbt_max_upslope_elev_change()
• wbt_maximal_curvature()
• wbt_mean_curvature()
• wbt_minimal_curvature()
• wbt_random_forest_classification()
• wbt_random_forest_regression()
• wbt_ring_curvature()
• wbt_rotor()
• wbt_shape_index()
• wbt_slope_vs_aspect_plot()
• wbt_svm_classification()
• wbt_svm_regression()
• wbt_unsphericity()
• wbt_vertical_excess_curvature()

What's Changed

• whitebox v2.1.0 by @brownag in #57
• Added machine learning tools by @giswqs in #59
• CRAN Release 2.1.0 by @brownag in #60

Full Changelog: v2.0.0...v2.1.0