fix: removed unused table cols and added column preprocessor func #357

	name: Create a link to template on master
	on:
	pull_request:
	types:
	- closed
	branches:
	- master

	jobs:
	Add_template_link:
	if: github.event.pull_request.merged == true
	runs-on: ubuntu-latest
	steps:

	- name: Create Output folder
	run: \|
	mkdir -p output/

	- name: Get file changes in commit
	id: files
	uses: jitterbit/get-changed-files@v1
	continue-on-error: true

	- name: Check .ipynb file existence
	run: \|
	for changed_file in ${{ steps.files.outputs.added_modified }}; do

	echo "File: ${changed_file}."
	if [[ "${changed_file}" == ".ipynb" ]]; then

	echo ".ipynb file found"
	echo "The template is now available on the master branch on this link:
	https://github.com/${{ github.event.pull_request.head.repo.full_name }}/blob/master/${changed_file}
	" > output/comment.md
	else
	echo "Not an .ipynb file."
	fi
	done

	- name: Check comment.md existence
	id: check_files
	uses: andstor/file-existence-action@v1
	with:
	files: "output/comment.md"

	- name: Upload comment.md as artifact
	if: steps.check_files.outputs.files_exists == 'true'
	uses: actions/upload-artifact@v1
	with:
	name: results
	path: output

	- name: Download comment.md as artifact
	if: steps.check_files.outputs.files_exists == 'true'
	uses: actions/download-artifact@v1
	with:
	name: results

	- name: comment PR
	if: steps.check_files.outputs.files_exists == 'true'
	uses: machine-learning-apps/pr-comment@master
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	with:
	path: results/comment.md

Provide feedback