Environment

- **node**: v15.3.0
- **equal**: v0.79.1

Current Behavior

entering text in the it-textarea component breaks data binding

Expected Behavior

Data binding shouldn't be broken after text was entered in the it-textarea component 😅

Steps To Reproduce

1. go to playground https://codesandbox.io/s/async-paper-64n1i?file=/src/main.js
2. enter something in the textarea
3. click on clear or set value buttons (there is no reaction)
4. reload playground
5. press set value button, text has changed

Anything else?

Would be nice to add status property, similar to it-input.
Thanks!