- update to 3.0.28:
  - Support format specifiers for HTML and ANSI formatted text.
  - Accept defaults for checkbox and radio list, and their corresponding dialogs.
  - Fix resetting of cursor shape after the application terminates.
  - Support for cursor shapes. The cursor shape for prompts/applications can now
    be configured, either as a fixed cursor shape, or in case of Vi input mode,
    according to the current input mode.
  - Handle "cursor forward" command in ANSI formatted text. This makes it
    possible to render many kinds of generated ANSI art.
  - Accept `align` attribute in `Label` widget.
  - Added `PlainTextOutput`: an output implementation that doesn't render any
    ANSI escape sequences. This will be used by default when redirecting stdout
    to a file.
  - Added `create_app_session_from_tty`: a context manager that enforces
    input/output to go to the current TTY, even if stdin/stdout are attached to
    pipes.
  - Added `to_plain_text` utility for converting formatted text into plain text.
  - Don't automatically use `sys.stderr` for output when `sys.stdout` is not a
    TTY, but `sys.stderr` is. The previous behavior was confusing, especially
    when rendering formatted text to the output, and we expect it to follow

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