initial structure and docs #1

	on:
	push:
	branches:
	- main
	pull_request:

	name: build

	jobs:

	build:
	name: Build
	runs-on: ubuntu-latest
	strategy:
	matrix:
	rust:
	- stable
	- nightly
	features:
	- default
	steps:
	- name: checkout
	uses: actions/checkout@v3
	- name: Generate cache key
	run: echo "${{ matrix.rust }} ${{ matrix.features }}" \| tee .cache_key
	- name: cache
	uses: actions/cache@v2
	with:
	path: \|
	~/.cargo/registry
	~/.cargo/git
	target
	key: ${{ runner.os }}-cargo-${{ hashFiles('.cache_key') }}-${{ hashFiles('/Cargo.toml','/Cargo.lock') }}
	- name: Set default toolchain
	run: rustup default ${{ matrix.rust }}
	- name: Set profile
	run: rustup set profile minimal
	- name: Update toolchain
	run: rustup update
	- name: Build
	run: cargo build --features ${{ matrix.features }}

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