roads 1.2.0

• Change dynamic least cost paths (DLCP) to iterative least cost paths (ILCP) throughout
• Change default roadMethod to "ilcp" in projectRoads
• Add ability to use a custom weightFunction and add a weightFunction gradePenaltyFn
  that determines the grade between two cells
• Add a vignette and a demo data set dem_example to show how gradePenaltyFn can be used.
• Change argument name from cost to weightRaster since it no longer represents a cost
  surface and can now be inputs to the weightFunction. Also change roadsInCost to roadsInWeight.
• returned roads are no longer unioned together.
• Deprecate getDistFromSource and use terra::distance instead.
• Fix bug in getLandingsFromTarget and change so that patches are used for 0,1 rasters and
  ids are used otherwise using terra::as.polygons to make it faster.

roads 1.1.1

• Fix an issue where updates to terra were causing roads to break
• In the process removed raster and sp from dependencies and converted example data to terra and sf formats. This requires a new function prepExData to unwrap the terra objects that needed to be wrapped for storage

roads 1.1.0

• converted to using terra throughout the package. raster objects are still accepted but will be converted to terra formats.
• Added getDistFromSource function to use moving windows to quickly get a raster of the distance from the nearest source (e.g road).
• remove SpaDES.tools dependency because it is archived on CRAN and there is an equivalent method in terra now.
• The returned cost raster now includes the projected roads as having a cost of 0. This makes it easier to loop additional road building over time but is a change from the previous version where the input cost surface was returned.

roads 1.0.0

• Initial release accepted by CRAN