Add package doc with meaning of bcrypt #437

	on: [push, pull_request]
	name: Test
	jobs:
	test:
	strategy:
	fail-fast: false
	matrix:
	go-version: [1.17.x, 1.18.x, 1.19.x]
	venv: [windows-2019, windows-2022]
	fips: [1, 0]
	runs-on: ${{ matrix.venv }}
	steps:
	- name: Install Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Set FIPS mode
	run: REG ADD HKLM\SYSTEM\CurrentControlSet\Control\Lsa\FipsAlgorithmPolicy /v Enabled /t REG_DWORD /f /d ${{ matrix.fips }}
	- name: Run Test - Short
	run: go test -v -gcflags=all=-d=checkptr -count 1 ./...
	env:
	GO_TEST_FIPS: ${{ matrix.fips }}
	- name: Run Test - Long
	# Run each test 10 times so the garbage collector chimes in
	# and exercises the multiple finalizers we use.
	# This can detect use-after-free and double-free issues.
	run: go test -v -gcflags=all=-d=checkptr -count 10 -short ./...
	env:
	GO_TEST_FIPS: ${{ matrix.fips }}

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