Merge #271 #51

	name: CI
	on:
	push:
	branches:
	- staging
	- trying

	jobs:

	test:
	name: Test
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust: [
	1.31.0, # 2018!
	1.34.0, # has_try_from
	1.36.0, # alloc, rand
	1.40.0, # arbitrary
	1.46.0, # quickcheck
	stable,
	beta,
	nightly
	]
	steps:
	- uses: actions/checkout@v3
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ matrix.rust }}
	- run: cargo build
	- run: ./ci/test_full.sh

	# try a target with `BigDigit = u32`
	i686:
	name: Test (i686)
	runs-on: ubuntu-latest
	steps:
	- run: \|
	sudo apt-get update
	sudo apt-get install gcc-multilib
	- uses: actions/checkout@v3
	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: stable-i686-unknown-linux-gnu
	- run: cargo build
	- run: ./ci/test_full.sh

	# try a target that doesn't have std at all, but does have alloc
	no_std:
	name: No Std
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: dtolnay/rust-toolchain@stable
	with:
	target: thumbv6m-none-eabi
	- run: cargo build --target thumbv6m-none-eabi --no-default-features --features "serde rand"

	fmt:
	name: Format
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: dtolnay/rust-toolchain@1.62.0
	with:
	components: rustfmt
	- run: cargo fmt --all --check

Provide feedback