Add `allow_extra=True` to `NWBFile.add_x_column` #799

	name: Run style check
	on: pull_request

	jobs:
	run-flake8:
	runs-on: ubuntu-latest
	steps:
	- name: Cancel non-latest runs
	uses: styfle/[email protected]
	with:
	all_but_latest: true
	access_token: ${{ github.token }}

	- uses: actions/checkout@v3
	with:
	submodules: 'recursive'
	fetch-depth: 0 # tags are required for versioneer to determine the version

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.11'

	- name: Install flake8
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8
	python -m pip list

	- name: Run flake8
	run: flake8

Provide feedback