prev 2.2.0

Added

• A button on the Markdown toolbar lets the text fill the window, for
  wide tables and long lines, or keeps it to its reading width, as it
  is at first.

Changed

• The markup bar's menus, the Pages menu, a form field's choices and
  the assistant's model menu have a new look: headings over groups,
  round color swatches, size and alignment buttons in the text style
  menu, and saved signatures shown as pictures.
• Drop-downs in Settings and the assistant's model button are plain
  until pointed at; their menus are as wide as their longest choice,
  and a long value ends in an ellipsis.
• The strokes of a drawn signature thin to a point as the pen lifts, as
  a pen gliding off the page, on the pad and in the saved signature.

Fixed

• Buttons beside a text field, such as the assistant's send button and
  Storage's Choose and Apply, line up with the field's box.
• The install script reports the version it installed rather than an
  old release's name.