Proposing the addition of a 'since' attribute to be added to the front-matter of the rules documentation. This would be used to indicate since what version of eslint-plugin-vue a given rule exists.

This proposal is in the context that not everyone has the latest version of eslint-plugin-vue (such as in a corporate environment), but may be looking at the documentation. It would give them a hint whether the rule was addd prior or after the version of eslint-plugin-vue being used in the project.

Example

---
pageClass: rule-details
sidebarDepth: 0
title: vue/no-unused-properties
description: disallow unused properties
since: v7.1.0
---
...