2.0.1 hotfix

• Include updated removeDisplayNone behavior in readme.

Important

PostHTML-Retag is now accessed via the retag named import!

Use one of the following:

import { retag } from "posthtml-retag";

const { retag } = require("posthtml-retag");

• Plugin will not remove display: none when it's set as !important.
• Standardize to named export/import.
• Update dependencies.
• Update to modern tsconfig, package.json, and Node module syntax.
• Add JSDoc info.
• Actually have tests to make sure nothing broke.