Add a reset() function to reset the service to default settings

src/libdanbooru/danbooruservice.h

@@ -198,10 +198,21 @@ public:
      **/
     int maxPosts() const;
 
+
+    /**
+     * @brief Fetches the next page of posts.
+     *
+     * @return void
+     */
     Q_INVOKABLE void nextPostPage();
 
+    /**
+     * @return A QStringList containing the currently-selected tags
+     */
     QStringList postTags() const;
 
+    void reset();
+
     /**
      * @brief Set blacklisted tags.
      *
@@ -230,9 +241,6 @@ public:
      **/
     void setMaximumAllowedRating(DanbooruPost::Rating rating);
 
-
-
-
     /**
      * @brief Set the board URL to connect to.
      *
@@ -241,7 +249,6 @@ public:
      */
     void setBoardUrl(const QUrl& url);
 
-
     /**
      * @brief Set an image cache to use.
      *