add: github actions

.github/release-drafter.yml

@@ -0,0 +1,16 @@
+name-template: 'v$RESOLVED_VERSION'
+tag-template: 'v$RESOLVED_VERSION'
+template: |
+  ## Changes
+  $CHANGES
+version-resolver:
+  major:
+    labels:
+      - 'major'
+  minor:
+    labels:
+      - 'minor'
+  patch:
+    labels:
+      - 'patch'
+  default: patch

.github/workflows/cd.yaml

@@ -0,0 +1,17 @@
+name: CD
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+
+  draft:
+    name: Draft
+    runs-on: ubuntu-latest
+    steps:
+      - name: Draft Release
+        uses: release-drafter/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/ci.yaml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+jobs:
+
+  test:
+    name: Test
+    strategy:
+      matrix:
+        go-version: [1.13.x, 1.14.x, 1.15.x]
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Run test
+        run: go test ./...