ENH: enable more ruff rules + make appropriate changes

[theroggy]

Same rules as applied in geopandas + pyupgrade (python 3.8) + pydocstyle

[brendan-ward]

Thanks for the cleanup @theroggy , just a few minor comments.

[theroggy]

I synced most settings with the recent update in geopandas, including the custom isort config.

Additional rules:

• pydocstyle
• target-version = "py38", because project.requires-python = ">=3.8" is in setup.py, not in pyproject.toml
• [tool.ruff.lint.isort]
  combine-as-imports = true

Also updated ruff version to 0.5.2.

[brendan-ward]

Thanks for the update @theroggy , this PR is good cleanup. Just a couple minor suggestions from me.

[jorisvandenbossche]

Thanks!