0.4.0

[patrickjm]

• Backend api is now class-based
• Frontend api now accepts a Websocket object instead of creating one
• Allow client reconnection with setWebsocket method
• Expose an api for posting messages to the inner jsdom worker (needed for event processing in react-websocket-dom)
• Prefix ws messages with wsdom- to not dominate ws connection
• Add bun as an package dependency rather than requiring it as a machine-level dependency
• Various jsdom api coverage updates (innerText, textContent)
• Added e2e tests