CRAN version

Major changes

• drop sp support (deprecate returnclass, to be removed in the next minor vesrion), osrm no longer accepts sp objects, nor sp results
• refactor to better display server error and warnings messages
• use RcppSimdJson instead of jsonlite
• use mapiso instead of isoband code for isopolygon creation
• osrmTable():
  • change in args order (loc, src, dst, ... => src,dst, loc, ...)
  • loc, src, dst accept data.frame, matrix, sfc and sf objects
  • identifiers are not needed, osrm uses row.names or indexes
  • better input type checking
• osrmRoute():
  • loc, src, dst accept data.frame, matrix, sfc and sf objects
  • identifiers are not needed, osrm uses row.names or indexes
  • better input type checking
• osrmTrip():
  • loc accepts vector of coordinates, data.frame, matrix, sfc and sf objects
  • identifiers are not needed, osrm uses row.names or indexes
  • better input type checking
• osrmIsochrone() & osrmIsometric():
  • loc, src, dst accept data.frame, matrix, sfc and sf objects
  • identifiers are not needed, osrm uses row.names or indexes
  • better input type checking
  • the sf output has now three fields (id, isomin and isomax)
  • osrmIsometric() has been renamed to osrmIsodistance()