Break `Variable` into `(Variable, Collection)` #752

	name: "Test Suite"
	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	msrv:
	name: Determine MSRV
	runs-on: ubuntu-latest
	outputs:
	msrv: ${{ steps.msrv.outputs.msrv }}
	steps:
	- uses: actions/checkout@v6
	- id: msrv
	run: echo "msrv=$(grep '^rust-version' Cargo.toml \| sed 's/."$.$"/\1/')" >> "$GITHUB_OUTPUT"

	test:
	needs: msrv
	strategy:
	matrix:
	os:
	- ubuntu
	- macos
	- windows
	toolchain:
	- stable
	- ${{ needs.msrv.outputs.msrv }}
	name: cargo test on ${{ matrix.os }}, rust ${{ matrix.toolchain }}
	runs-on: ${{ matrix.os }}-latest
	steps:
	- uses: actions/checkout@v6
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: ${{ matrix.toolchain }}
	- name: Cargo test
	run: cargo test --workspace --all-targets
	- name: Cargo doc test
	run: cargo test --doc

	# Check for clippy warnings
	clippy:
	name: Cargo clippy
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	components: clippy
	- name: Cargo clippy
	run: cargo clippy --workspace --all-targets
	env:
	RUSTFLAGS: "" # Don't make test fail on clippy

Provide feedback