feat: Support ibm-watson v6 (#224)

.eslintrc.yml

@@ -2,9 +2,8 @@ env:
   es6: true
   node: true
   jest: true
-extends: 
+extends:
 - 'plugin:@typescript-eslint/recommended'
-- 'prettier/@typescript-eslint'
 - 'plugin:prettier/recommended'
 
 parser: '@typescript-eslint/parser'

lib/index.d.ts

@@ -15,8 +15,7 @@
  */
 import Botkit = require('botkit');
 import AssistantV1 = require('ibm-watson/assistant/v1');
-import { MessageParams, MessageResponse } from 'ibm-watson/assistant/v1';
-import { Context } from 'ibm-watson/assistant/v1';
+import { Context, MessageParams, MessageResponse } from 'ibm-watson/assistant/v1';
 import { Storage } from 'botbuilder';
 import { BotkitMessage } from 'botkit';
 export interface WatsonMiddlewareConfig extends AssistantV1.Options {
@@ -41,7 +40,7 @@ export declare class WatsonMiddleware {
     private storage;
     private readonly minimumConfidence;
     private readonly ignoreType;
-    constructor(config: WatsonMiddlewareConfig);
+    constructor({ iam_apikey, minimum_confidence, storage, ...config }: WatsonMiddlewareConfig);
     hear(patterns: string[], message: Botkit.BotkitMessage): boolean;
     before(message: Botkit.BotkitMessage, payload: MessageParams): Promise<MessageParams>;
     after(message: Botkit.BotkitMessage, response: MessageResponse): Promise<MessageResponse>;