v2.0.0-beta.14

2.0.0-beta.14

Breaking

• The handler field tagname is now tagName, the name the files
  sidebar tabs and the other registration APIs use. The shared handler
  registry moved from _nc_viewer_scope.handlers_v1 to handlers_v2,
  so a copy of beta.13 or older on the same page does not share a viewer
  with this one: apps and the server have to move to beta.14 together (#81)

Added

• A file that takes more than 5 seconds to load says "Still loading…"
  under the spinner, and one that failed to show offers "Try again"
  without closing the viewer (#78)

Fixed

• Pictures on a share that forbids downloading showed nothing: their
  preview is now fetched with the x-nc-preview header the server asks
  for (#51)
• When that preview cannot be loaded either, the viewer says "No preview
  available, download is disabled." instead of "Failed to load image." (#79)
• Rotate and edit only show once the file is shown, not over the loading
  spinner or the error of a file that failed to show (#80)