Optimize MapOf's hash functions for integers #128

	name: build-1.18
	on: [push]

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go-version: [1.18.x]
	name: Build with Go ${{ matrix.go-version }}
	steps:
	- uses: actions/checkout@v3

	- name: Install Go
	uses: actions/setup-go@v3
	with:
	go-version: ${{ matrix.go-version }}

	- name: Run tests
	run: go test -v ./...

	- name: Run tests with race detector
	run: go test -timeout 10m -race -v ./...

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