rich 9.8.0

on Python PyPI

A few fixes and minor enhancements.

[9.8.0] - 2021-01-11

### Added

• Added rich_measure for tree
• Added rich.align.VerticalCenter

Changed

• The style argument on Align now applies to background only
• Changed display of progress bars in no_color mode for clarity
• Console property size will fall back to getting the terminal size of stdout it stdin fails, this allows size to be correctly determined when piping

Fixed

• Fixed panel cropping when shrunk too bar
• Allow passing markdown over STDIN when using python -m rich.markdown
• Fix printing MagicMock.mock_calls #903