add release action and bump to 1.21 go

Signed-off-by: Miek Gieben <[email protected]>

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: CI
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          body: |
+            Release version ${{ github.ref }}
+          draft: false
+          prerelease: false

.github/workflows/go.yml

@@ -8,12 +8,12 @@ jobs:
     steps:
 
     - name: Install Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.15
+        go-version: 1.21.x
 
     - name: Check out code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Build
       run: go build -v ./...

go.mod

@@ -1,6 +1,6 @@
 module github.com/mmarkdown/mmark/v2
 
-go 1.13
+go 1.21
 
 require (
 	github.com/BurntSushi/toml v1.3.2