Add validation to otter assign that errors when cell/line magics are present in test cells #231

	# A workflow for automatically adding all new issues to a project
	name: Add issues to project
	on:
	issues:
	types: [ opened ]
	jobs:
	createCard:
	runs-on: ubuntu-latest
	steps:
	- name: Create project card
	uses: peter-evans/create-or-update-project-card@v1
	with:
	project-name: Otter-Grader Issues and Tasks
	column-name: Icebox

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