routes:

collections:
  /:
    permalink: '/{globals.permalinks}/' # special 1.0 compatibility setting. See the docs for details.
    template:
      - index

taxonomies:
  tag: /tag/{slug}/
  author: /author/{slug}/

routes:

collections:
  /:
    permalink: /{slug}/
    template:
      - index

taxonomies:
  tag: /tag/{slug}/
  author: /author/{slug}/

Revert workaround for 1.0 version of Ghost
Revert workaround for 1.0 version of Ghost