Events are a general purpose message-passing primitive that would be useful to people who use bevy_ecs standalone, so IMO it makes sense to pull it into bevy_ecs

What solution would you like?

Move Events into bevy_ecs

What alternative(s) have you considered?

Do nothing

Additional context

Here's the conversation on discord that led this issue: https://discord.com/channels

To improve the quality of our end-to-end testing code, we want to create lint checks for common bad practices. If you would like to help with this issue, please leave a comment on this issue with the task you want to work on.

How to Write E2E Lint Checks

1. First think about how you can identify the bad practice based solely on the text of the code. Imagine you get a code file as a string

Greetings and thanks for this software.

I would like to request for adding the two processors uppercase and lowercase to filebeat input processing.

Besides being useful, adds to making things consistent.

Thanks for your time and attention

To allow a higher api request volume, we should use Binance's websocket APIs instead of the current implementation.

Hi,
Excellent boilerplate! How about adding support for sockets in this to make a more complete boilerplate?
Also instructions on deployment using Docker/native would be very helpful.
Thanks.

Description

Avoid unnecessary re-render of the data table in Explore. As we can see in the video below, the data table is re-rendered even if the control being applied is not related to the table. We can improve the user experience by only re-rendering the data table if the modified control affects the table data.

Screenshot

https://user-images.githubusercontent.com/70410625/1137825

Kibana version:
7.13-SNAPSHOT

Elasticsearch version:
7.13-SNAPSHOT

Original install method (e.g. download page, yum, from source, etc.):
Cloud deployment

Describe the bug:

In Lens, the text "Show details of error" functions properly but the string is inaccurate once the details are shown.

Steps to reproduce:

1. In Lens, create an invalid runtime field
2. Dra