Vectorization, Generalization, Bugfixization

v0.12.0

API changes, functional fixes

• Add dropunaired param to trakt.seasons.summary (defaults to TRUE).
  • Requires extended to be more than min since the required aired_episodes field
    is only present with higher levels of detail.
• Add extended param to trakt.user.f*
• Fix trakt.user.f* now return NULL when the user is private instead of failing.

Internal changes

• User internal, generalized functions to reduce duplicate code for the following:
  • trakt.*.popular
  • trakt.*.related
  • trakt.*.trending
  • trakt.*.summary
  • trakt.*.ratings

Vectorization improvements

• Add multiple target input support (vectorization) for:
  • trakt.user.f* functions: Results will be rbinded together and a source_user column is appended.
  • trakt.seasons.season: Soon to make trakt.getEpisodeData obsolete.
  • trakt.*.summary: Forces force_data_frame to TRUE to enable rbinding.
  • trakt.*.related: Appends source column containing respective input id.
  • trakt.*.ratings: Returns result as a list with each entry containing data for each
    show or movie to accommodate the distribution variable (data.frame)
  • trakt.people.summary: Appends person column with target id.
  • trakt.*.watching: Returns data.frame with source column containing each target.