History uuid should be a string, for uniqueness sake

api/src/com/todoroo/astrid/data/History.java

@@ -28,7 +28,7 @@ public class History extends AbstractModel {
             TABLE, ID_PROPERTY_NAME);
 
     /** Remote ID */
-    public static final LongProperty UUID = new LongProperty(
+    public static final StringProperty UUID = new StringProperty(
             TABLE, RemoteModel.UUID_PROPERTY_NAME);
 
     /** Created at */

astrid/plugin-src/com/todoroo/astrid/actfm/sync/messages/FetchHistory.java

@@ -81,7 +81,7 @@ public class FetchHistory {
                                 History history = new History();
                                 history.setValue(History.TABLE_ID, table);
                                 history.setValue(History.TARGET_ID, uuid);
-                                history.setValue(History.UUID, historyJson.optLong("id"));
+                                history.setValue(History.UUID, historyJson.optString("id"));
                                 history.setValue(History.USER_UUID, historyJson.optString("user_id"));
                                 history.setValue(History.COLUMN, historyJson.optString("column"));
                                 history.setValue(History.OLD_VALUE, historyJson.optString("prev"));