more mult kron optimisation #1064

	name: CI
	on:
	- push
	# - pull_request
	jobs:
	test:
	env:
	GKS_ENCODING: "utf8"
	GKSwstype: "nul"
	name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
	runs-on: ${{ matrix.os }}
	continue-on-error: ${{ matrix.version == 'nightly' \|\| matrix.version == '^1.10.0-0' }}
	strategy:
	fail-fast: false
	matrix:
	version:
	- '1.9' #^1-0 and ^1.9-0 are not recognised
	os:
	- ubuntu-latest
	- macOS-latest
	- windows-latest
	arch:
	- x64
	include:
	- os: ubuntu-latest
	prefix: xvfb-run
	- version: '1.8'
	os: ubuntu-latest
	arch: x64
	- version: '^1.10.0-0'
	os: ubuntu-latest
	arch: x64
	allow_failure: true
	- version: 'nightly'
	os: ubuntu-latest
	arch: x64
	allow_failure: true
	steps:
	- uses: actions/checkout@v4
	- uses: julia-actions/setup-julia@v1
	with:
	version: ${{ matrix.version }}
	arch: ${{ matrix.arch }}
	- name: Set JULIA_NUM_THREADS for Julia 1.9 on Ubuntu
	if: matrix.version == '1.9' && matrix.os == 'ubuntu-latest'
	run: echo "JULIA_NUM_THREADS=2" >> $GITHUB_ENV
	- uses: actions/cache@v3
	env:
	cache-name: cache-artifacts
	with:
	path: ~/.julia/artifacts
	key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
	restore-keys: \|
	${{ runner.os }}-test-${{ env.cache-name }}-
	${{ runner.os }}-test-
	${{ runner.os }}-
	- uses: julia-actions/julia-buildpkg@v1
	- uses: julia-actions/julia-runtest@v1
	with:
	prefix: ${{ matrix.prefix }} # for `xvfb-run`
	- uses: julia-actions/julia-processcoverage@v1
	- uses: codecov/codecov-action@v3
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	file: lcov.info

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