Chore/release (#6)

* add release action

* add changelog

* checkout before release

.github/workflows/release.yml

@@ -0,0 +1,23 @@
+name: Create release
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Release
+        uses: docker://antonyurchenko/git-release:latest
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DRAFT_RELEASE: 'false'
+          PRE_RELEASE: 'false'
+          CHANGELOG_FILE: 'CHANGELOG.md'
+          ALLOW_EMPTY_CHANGELOG: 'false'
+          ALLOW_TAG_PREFIX: 'true'

CHANGELOG.md

@@ -0,0 +1,14 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] - 2021-03-03
+
+### Added
+
+Initial version