Support rss2 and atom at the same time.

[mythsman]

Well , i want my website provides the two types at the same time, can anyone do me a favour?

[curbengh]

@mythsman

I've drafted something to support this feature.
How to test:

package.json
-  "hexo-generator-feed": "^2.0.0"
+  "hexo-generator-feed": "curbengh/hexo-generator-feed#atom-rss2"

$ rm -rf node_modules/ && npm i

_config.yml
feed:
  type:
    - 'atom'
    - 'rss2'
  autodiscovery: false # currently not compatible yet

$ hexo clean && hexo g

[mythsman]

@curbengh 👍