Add flatten_non_str function #6

	name: flati test

	on:
	push:
	paths:
	- ".github/workflows/test-linux.yml"
	- "flati/**"
	- "*.py"
	pull_request:
	branches:
	- main
	paths:
	- ".github/workflows/test-linux.yml"
	- "flati/**"
	- "*.py"

	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python:
	- "3.13"
	- "3.12"
	- "3.11"
	- "3.10"
	- "3.9"
	- "3.8"
	steps:
	- name: Checkout code
	uses: actions/[email protected]

	- name: setup python ${{ matrix.python }}
	uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
	with:
	python-version: ${{ matrix.python }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r test-requirements.txt

	- name: Run tests
	run: \|
	python -m pip install .
	pytest

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