Release v0.0.2

New functions

• utility functions to calculate distance distortions in some
  projection methods
• add_wms_*()and add_wmts_*() family of functions, which are shorthand
  alternatives for a fully specified leaflet::addWMSTiles(),
  leaflet.extras2::addWMS() or
  leaflet::addTiles() statement.

Enhancements

• updated vignette demonstrating get_features_wfs() and get_coverage_wcs()
• improved error handling in get_features_wfs() (#3)

Bug fixes

• Minor changes to fix failing GitHub actions