Add release script

release.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+function get_version() {
+	cargo metadata --format-version=1 --no-deps --locked \
+		| jq -r '.packages[].version'
+}
+
+if [ -n "$(git status --untracked-files=no --porcelain)" ]; then
+	echo "Your working directory is not clean"
+	exit 1
+fi
+
+echo   "Current Version:" $(get_version)
+printf "New Version:     "
+read version0
+version="$(echo "$version0" | tr -d '[:blank:]')"
+sed -E -e '/^\[package\]$/,/^\[/ {/version =/ {s/"[^"]*"/"'"$version"'"/; :a;n;ba}}' \
+	-i Cargo.toml
+
+if [ "$(get_version)" != "$version" ]; then
+	echo "Failed to set version"
+	exit 1
+fi
+
+cargo update -p cargo-doc2readme
+git commit Cargo.toml Cargo.lock -m "Release cargo-doc2readme $version"
+git push
+git tag -s -a -m "Version $version" "$version"
+git push --tags
+cargo publish --locked