node-fetch.js should treat status 308 as a redirect

[denishowew]

PR 55 added support for HTTP status 307 (temporary redirect with no change of method).
Should all 3XX codes be treated as redirects? Certainly my current favourite,
308 (permanent redirect), should.

Also not recognised:

• 300 Multiple Choices
• 304 Not Modified
• 305 Use Proxy

[valeriangalliat]

Hey! I just published fetch-cookie@2.0.0 with an improved redirect logic and now handles all of those redirect statuses. It should basically behave the same as node-fetch as far as redirects are concerned now. Cheers :)