Token expiration

[samfishman]

Can you clarify when user access tokens expire? We're seeing them come up fairly frequently and it is making it hard to implement an effective integration. The only information I could find on expirations was here: If the user's token expires, API requests will start receiving a 401 error. When this happens, your app should ask the user to authenticate again.

Is there any way to request a longer or infinite expiration window?

(Alternatively, an OAuth2 API with refresh tokens would serve our needs.)