chore(release): 0.4.0 #1

	name: Create GitHub Release

	on:
	push:
	tags:
	- "v*"

	jobs:
	release:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Extract release notes from changelog
	env:
	TAG_NAME: ${{ github.ref_name }}
	run: \|
	set -euo pipefail

	version="${TAG_NAME#v}"
	start_pattern="^## ${version}( - .*)?$"

	if ! awk -v start="$start_pattern" '
	BEGIN { in_section = 0; found = 0 }
	$0 ~ start { in_section = 1; found = 1; next }
	/^## / && in_section { exit }
	in_section { print }
	END {
	if (!found) {
	exit 1
	}
	}
	' CHANGELOG.md > RELEASE_NOTES.raw.md; then
	echo "No changelog section found for version ${version}."
	exit 1
	fi

	sed -e '/./,$!d' RELEASE_NOTES.raw.md > RELEASE_NOTES.md

	if [ ! -s RELEASE_NOTES.md ]; then
	echo "Changelog section for version ${version} is empty."
	exit 1
	fi

	- name: Create release
	uses: softprops/action-gh-release@v2
	with:
	tag_name: ${{ github.ref_name }}
	name: ${{ github.ref_name }}
	body_path: RELEASE_NOTES.md

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