FerrumPlay 0.9.1

• Scrolling through the Lyrion albums no longer crashes the application. The scale of 0.9.0 is a
  render transform on a frame that is sized down by the same factor, and that frame clipped its
  contents as well. Avalonia works out the viewport it hands to every virtualising control by
  clipping at the frame's bounds first and taking the scale out afterwards - so the division
  happened twice. At factor 1.68 the album grid was told it had 660x375 to fill instead of
  1108x630, and once scrolled the window sat in the wrong place too; the repeater's bookkeeping of
  the tiles it had built ran apart and the layout pass threw. The rounded corners are cut by a
  frame below the scale now, where clipping is harmless.
  Every list in the application was given the same wrong viewport - the playlist above all. Those
  did not crash, but they built too few rows and filled in late while scrolling. That is gone with
  the same fix.
• Context menus, tooltips and drop-down lists grow with the application again. They are drawn into
  a window of their own and are therefore no children of the frame that the scale enlarges, so
  since 0.9.0 they stayed at their original size while everything around them grew; up to 0.8.0 an
  environment variable had scaled the whole windowing system. The factor is applied in the popup
  template rather than to each menu, which takes submenus and drop-downs along with it.
• The update check no longer announces an update that is none. The number after the hyphen is the
  package revision, not a program version - 0.9.1-1 and 0.9.1-2 are the same FerrumPlay - but it
  went into the comparison, so a repackaged release looked like a new one.