Update changelog and readme, fix test for pre rust 1.57 #105

	name: CI tests
	on: [push, pull_request]

	jobs:
	test:
	name: Test
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	build: [stable, nightly, 1.50.0, macos, windows, mingw]
	include:
	- build: stable
	os: ubuntu-latest
	rust: stable
	- build: nightly
	os: ubuntu-latest
	rust: nightly
	- build: 1.50.0
	os: ubuntu-latest
	rust: 1.50.0
	- build: macos
	os: macos-latest
	rust: stable
	- build: windows
	os: windows-latest
	rust: stable
	- build: mingw
	os: windows-latest
	rust: stable-x86_64-gnu
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	override: true
	toolchain: ${{ matrix.rust }}
	- run: cargo test --manifest-path ./miniz_oxide/Cargo.toml
	- run: cargo test --manifest-path ./miniz_oxide/Cargo.toml --features simd
	- run: cargo build --manifest-path ./miniz_oxide/Cargo.toml --no-default-features
	- run: cargo test

	# rustfmt:
	# name: Rustfmt
	# runs-on: ubuntu-latest
	# steps:
	# - uses: actions/checkout@v3
	# - uses: actions-rs/toolchain@v1
	# with:
	# profile: minimal
	# components: rustfmt # seems to not work?
	# toolchain: stable
	# - run: rustup toolchain install stable --component rustfmt
	# - run: cargo fmt -p miniz_oxide -- --check

	wasm:
	name: WebAssembly
	runs-on: ubuntu-latest
	strategy:
	matrix:
	target: [wasm32-unknown-unknown, wasm32-wasi]
	steps:
	- uses: actions/checkout@v3
	- uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	target: ${{ matrix.target }}
	- run: cargo build -p miniz_oxide --target ${{ matrix.target }}

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