bcmaps 2.0.0

Removal of sp and raster support

We've removed support for the sp and raster packages,
especially those parts that require
the use of the rgdal and rgeos packages, which will be retired in October 2023. See the r-spatial blog for details of this evolution.

• Removed the class argument in all of the data download functions: get_layer() and all of the wrapper shortcuts such as bc_bound(), census_tract(), etc. These functions will now only return sf objects.
• The Spatial method of transform_bc_albers() is removed.
• fix_geo_problems() is removed. For sf objects simply use sf::st_make_valid()
• self_union() is removed. Use raster::union() for SpatialPolygonsDataFrames, or sf::st_union() with sf objects instead.
• get_poly_attribute() is removed.
• raster_by_poly() is retained for now as it does not rely on rgdal or rgeos,
  just sp and raster, which are still being maintained.

Documentation improvements

• Added a pkgdown site for bcmaps https://bcgov.github.io/bcmaps/ (#63)
• Moved the detailed user documentation from the README to a Get Started with bcmaps article/vignette (#42)
• Better documentation for bc_bound_hres() (#124)