correction to aksonov#1057

aksonov#1057 allows to push params to tab scenes, but it is breaking sceanes
tree.
Ex: 5 tabs
invoke :Actions.tab5(70)
all tab icons disappear, except tab5 itself.

Here is correction that updates only target scene(appending passed
params only to it)
May be it would repair aksonov#1081 too (not tested)

src/Reducer.js

@@ -211,19 +211,26 @@ function inject(state, action, props, scenes) {
       };
     case ActionConst.JUMP:
       assert(state.tabs, `Parent=${state.key} is not tab bar, jump action is not valid`);
-      ind = -1;
-      children = getInitialState(props, scenes, ind, action);
-      children = Array.isArray(children) ? children : [children];
-      children.forEach((child, i) => {
-        if (child.sceneKey === action.key) ind = i;
-      });
-
+      /* TODO: recursive key search (for sub-tab scenes)*/       
+      ind = state.children.findIndex(el => el.sceneKey === action.key);
+      // variant #1      
+      // get target scene with data passed in Actions.SCENE_KEY(PARAMS)
+      const targetSceneWithData = getInitialState(props, scenes, ind, action);
+      // find same scene in state.children 
+      const targetSceneInState = state.children[ind];
+      // update child with data       
+      state.children[ind] = {...targetSceneInState, ...targetSceneWithData};
+
+      // variant #2 - NOT WORKING
+      // just update target scene in state tree with PARAMS   
+      // state.children[ind] = { ...props, ...state.children[ind] };
+
       assert(ind !== -1, `Cannot find route with key=${action.key} for parent=${state.key}`);
 
       if (action.unmountScenes) {
         resetHistoryStack(state.children[ind]);
       }
-      return { ...state, index: ind, children };
+      return { ...state, index: ind };
     case ActionConst.REPLACE:
       if (state.children[state.index].sceneKey === action.key) {
         return state;