Update load_boston in README.md

[jyx-su]

Fixed #339

[ryan-wolbeck]

can you add these same updates to examples/regression.py and examples/survival.py?

https://github.com/stanfordmlgroup/ngboost/blob/master/examples/regression.py

[jyx-su]

Done @ryan-wolbeck

[ryan-wolbeck]

Please remove pandas from the pyproject.toml we have chosen to remove this as a dependency in a previous PR here #318

In order to get the tests to pass, run black on all the files changed here.

[jyx-su]

Removed the pandas dependency and ran "black ."
Can you advise on why the tests still failed?

[ryan-wolbeck]

the order of your imports is in the incorrect style

isort....................................................................Failed
- hook id: isort
- files were modified by this hook

Fixing /home/runner/work/ngboost/ngboost/examples/regression.py
Fixing /home/runner/work/ngboost/ngboost/examples/survival.py

If you have make and poetry installed in your environment you can just run
make lint and it will run black and fix the import issues then you can make another commit

make lint run's the following
poetry run pre-commit run --hook-stage manual --all-files