test

Add instructions module and inst field to Cpu struct #16

	name: test
	on: push
	jobs:
	am-test:
	name: am-test
	runs-on: ubuntu-latest
	steps:
	- name: checkout
	uses: actions/checkout@master
	- name: test
	run: cargo test --test am-tests
	riscv-test:
	name: riscv-test
	runs-on: ubuntu-latest
	steps:
	- name: checkout
	uses: actions/checkout@master
	- name: test
	run: cargo test --test riscv-tests

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