Changes to Directions API

removed the request property key

deleted the query request parameter key

added the new required query request parameter key

the endpoint scheme security api-key was removed from the API

added the new required request property key

the endpoint scheme security api-key was added to the API

the endpoint scheme security api-key was removed from the API

the endpoint scheme security api-key was added to the API

added the pattern ^([-+]?\d+(\.\d+)?),([-+]?\d+(\.\d+)?)(\|([-+]?\d+(\.\d+)?),([-+]?\d+(\.\d+)?))*$ to the request property waypoints

added the new optional request property altcount

added the new optional request property alternatives

added the new optional request property approaches

added the new optional request property avoid

added the new optional request property bearings

added the new optional request property cross_border

added the new optional request property departure_time

added the new optional request property drive_time_limits

added the new optional request property emission_class

added the new optional request property exclude

added the new optional request property geometry

added the new optional request property hazmat_type

added the new optional request property mode

added the new optional request property option

added the new optional request property overview

added the new optional request property rest_times

added the new optional request property road_info

added the new optional request property route_type

added the new optional request property steps

added the new optional request property truck_axle_load

added the new optional request property truck_size

added the new optional request property truck_weight

added the new optional request property turn_angle_range