message: Expose WebhookError type
diff: @@ -68,7 +68,7 @@ mod params;
  mod resources;
  pub use client::{Client, Params};
  -pub use error::{Error, ErrorCode, ErrorType, RequestError};
  +pub use error::{Error, ErrorCode, ErrorType, RequestError, WebhookError};
  pub use ids::*;
  pub use params::{List, Metadata, RangeBounds, RangeQuery, Timestamp};
  pub use resources::*;
  