Rewrite pattern parser (#29) #40

	name: Continuous Integration

	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main

	jobs:
	test:
	name: Test Grok
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	build: [linux, macos, windows]
	include:
	- build: linux
	os: ubuntu-latest
	rust: stable
	- build: macos
	os: macos-latest
	rust: stable
	- build: windows
	os: windows-latest
	rust: stable
	steps:
	- uses: actions/checkout@v2
	- uses: actions-rs/toolchain@v1
	with:
	toolchain: stable
	- uses: actions-rs/cargo@v1
	name: Test with default features
	with:
	command: test
	- uses: actions-rs/cargo@v1
	name: Test with fancy-regex feature
	with:
	command: test
	args: --no-default-features --features fancy-regex
	- uses: actions-rs/cargo@v1
	name: Test with pcre2 feature
	with:
	command: test
	args: --no-default-features --features pcre2
	- uses: actions-rs/cargo@v1
	name: Test with onig feature
	with:
	command: test
	args: --no-default-features --features onig
	- uses: actions-rs/cargo@v1
	name: Test with regex feature
	with:
	command: test
	args: --no-default-features --features regex

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