Only Rerender "DAO Connected" Components

還沒有人認領這個 Issue。

Only rerender components that are "DAO Connected".

This can be done through supporting a subscription model, where components that depend on additional contextual information (ex: , ).

For example, consider...
```html

{data => (

)}

```
Ideally, if Arc.Config's web3 provider changes, View1 & 2 shouldn't have to rerender, but View3 should because the data may be different. This can be partially achieved if DAO connect's the Arc.Config's subscriber list, which will cause it to be told to rerender if the config ever changes, but this only causes View1 to not be rendered. View2 would still be rendered because currently the data is stored within the Component's state (the DAO's state), which would cause View2 to still be rendered.

Going to leave this here for now, as it'll be interesting to come back to this after some metrics have been gathered, as I feel this may be premature optimization.

首先查看 Arc.Config、DAO 和 DAO.Data 中描述的元件訂閱行為，尤其是 DAO 狀態更新如何觸發重新渲染。在決定是否推進最佳化之前，先收集提議的指標；完成的標準是確定一個經過測量且達成共識的範圍，僅重新渲染與 DAO 連線的元件。

由索引模型根據 Issue 內容生成。