Add support for backward CHATHISTORY BETWEEN #314

	name: CI

	on: [push, pull_request]

	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest

	strategy:
	matrix:
	rust:
	- nightly

	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install rust (${{ matrix.rust }})
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	profile: minimal
	override: true

	- name: Enable Cargo cache
	uses: Swatinem/rust-cache@v2

	- name: Build
	uses: actions-rs/cargo@v1
	with:
	command: build
	args: ${{ matrix.features }}

	- name: Test
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: ${{ matrix.features }}

	# fails to build:
	#- name: Doc
	# uses: actions-rs/cargo@v1
	# with:
	# command: doc
	# args: ${{ matrix.features }}

	fmt:
	name: Check formatting
	runs-on: ubuntu-latest

	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	components: rustfmt
	profile: minimal
	override: true

	- name: cargo fmt -- --check
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: -- --check

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