docusaurus 2.0.0-alpha.28 on Node.js NPM

2.0.0-alpha.28

BREAKING withBaseUrl is renamed to useBaseUrl because its a React Hooks. Make sure you import/rename it correctly. Eg: import useBaseUrl from '@docusaurus/useBaseUrl;
Further reduce memory usage to avoid heap memory allocation failure.
Fix keywords frontmatter for SEO not working properly.
Fix swizzle command not passing context properly to theme packages.
Add extendCli api for plugins. This will allow plugin to further extend Docusaurus CLI.
Fix swizzle command not being able to swizzle single js file.
Fix logo URL in footer to be appended with baseUrl automatically.
Add the option --no-open for start command.
Set @babel/env useBuiltins to usage. This will automatically use browserlist and import polyfills required.
Modified TerserWebpackPlugin terserOptions for better cross-browser compatibility.
Fix potential security vulnerability because we're exposing the directory structure of the host machine.
Upgrade dependencies.