hooks

🚀 Feature request

Current Behavior

The type ErrorMessage doesn't have an id property.

Desired Behavior

It'd be nice id?: string would be added to the type ErrorMessage and set on the outermost component that serves as error message.

Suggested Solution

Add id={this.props.id} to the outer component in ErrorMessage.

Who does this impact? Who is this

Is your feature request related to a problem? Please describe.
React custom hook for playing audios

Describe the solution you'd like
Something like this one: StackOverflow: Playing sound in React.js

Describe alternatives you've considered
N/A

Additional context
N/A

This is suggested in Gitter chat (Russian room). We have such method for uia_controls.MenuWrapper. But some menus are implemented as toolbar with drop-down submenus. It makes sense to add similar methods to choose such submenu items.

Describe the bug
The sidebar has overflow: scroll causing scrollbars always to be visible on Windows

To Reproduce
Steps to reproduce the behavior:

1. Go to documentation using Windows

Expected behavior
There should not be scrollbars before the content overflows

Screenshots
![image](https://user-images.githubusercontent.com/2255960/99193174-891e7c00-2777-11eb-8ceb-79

It's important, I think, if the goal is to communicate that this can replace React in more ways than function.

Related #166.

We currently ignore meta key strokes in our internal event handler. This was originally added as a quick workaround to prevent overriding base cmd+k functionality. Let's revisit this as shortcuts such as cmd+s to save a doc is common.