replace porcelain with system.cmd and native timeout command, add jso… #26

	name: Erlang CI

	on:
	push:
	pull_request:

	jobs:
	test:
	runs-on: ubuntu-latest

	container:
	image: erlang

	steps:
	- uses: actions/checkout@v2
	- name: Built plt
	run: dialyzer --build_plt --apps erts kernel stdlib mnesia
	- name: Matrix
	run: bash matrix

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