v2.0.0

Added

• implemented a new 'countries' parameter for the arcgisOnlineProvider based on new capabilities of the World Geocoding Service #38
• implemented a new 'categories' parameter for the arcgisOnlineProvider based on new capabilities of the World Geocoding Service
• added the ability to include 'categories' in requests using L.esri.Geocoding.suggest
• updated result objects across providers to include the actual GeoJSON of candidates #81

Fixed

• included additional logic to ensure that queries are case insensitive #83 (thanks @rntdrts)
• refactored the calculation of result bounds calculation to avoid uncaught exceptions and usage of new #84