Aperture: Films made of clips

A video can now be a film made of clips: each clip is rendered on its own, and a timeline.json cuts them together, with Audio lanes for music and sound.

• A note can target one clip. The builder sees its neighbours and the film's bible, so the clip still fits the film.
• A new New video screen: give it a name and, if you like, a project, then drop clips and a song, describe a short video, or plan a film in acts.
• The editor has a timeline: trim, dissolve or wipe between clips, J and L cuts, Audio lanes, reorder, and This clip or Whole video for each change.
• Filter looks work on any frame.
• Smaller cards in the library.
• Starter prompts read as quotes.

Covers 0.1.81 to 0.1.87. The release-notes video is attached in 9:16 and 16:9.