Log Message:
py-tabulate: updated to 0.9.0

0.9.0: Drop support for Python 2.7, 3.5, 3.6.
  Migrate to pyproject.toml project layout (PEP 621).
  New output formats: `asciidoc`, various `*grid` and `*outline` formats.
  New output features: vertical row alignment, separating lines.
  New input format: list of dataclasses (Python 3.7 or later).
  Support infinite iterables as row indices.
  Improve column width options.
  Improve support for ANSI escape sequences and document the behavior.
  Various bug fixes.