v0.11.3

API changes, functional fixes

• Add build_trakt_url to ease trakt API URL assembly and reduce duplicate code.
• Add force_data_frame option to trakt.*.summary: Forces unnesting.
• Rename trakt.show.stats to trakt.stats, will work with both movies and shows
  as soon as the API endpoint actually works.

Minor changes

• Expand @family tags in docs a little