6.14.1

• changed the term "virtual queue" to "natural queue" in the literature to refer to the list of episodes in a given feed
• ignore updating episodes with duration of less than 1 second
• start using Podcini's own cast provider in the play app
  • audio-only youtube media can now be cast to speaker (experimental for now)
  • cast of any video is disabled for now
• OnlineSearch fragment is in Compose
• minor Compose amendments in fragments of Search, About
• updates in documents of required licenses