Final update of `excerpt_description` option.
Final update of `excerpt_description` option.

1. If "is_index" (homepage) and "description" is defined and "excerpt_description" set to true (by default in config) — post description will appear in old style.
2. If all parameters the same, but not "is_index" (not homepage, single post) — post description will appear in new style (in meta header).
3. If all parameters the same, but "excerpt_description" set to false — post description will appear in new style anywhere.
4. If  "description" is not defined — all will be in old style (description will not appear nowhere).
mchsinx/hexo-theme-next