Avoid type promotion in increment/decrement #124

	# This is a basic workflow to help you get started with Actions

	name: runtests

	# Controls when the action will run.
	on:
	# Triggers the workflow on push or pull request events but only for the main branch
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	test:
	# The type of runner that the job will run on
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	julia-version: ['~1.6', '~1.7']
	os: [ubuntu-latest]

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2

	# Setup Julia environment
	- name: "Setup Julia"
	uses: julia-actions/setup-julia@v1
	with:
	version: ${{ matrix.julia-version }}

	# Cache binary artifacts
	- uses: actions/cache@v2
	env:
	cache-name: cache-artifacts
	with:
	path: \|
	~/.julia/artifacts
	~/.julia/packages
	~/.julia/registries
	key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
	restore-keys: \|
	${{ runner.os }}-test-${{ env.cache-name }}-
	${{ runner.os }}-test-
	${{ runner.os }}-

	# run unit tests
	- name: "run unit tests"
	uses: julia-actions/julia-runtest@v1
	with:
	coverage: false

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