chore: Update release workflow

Author: c12i

.github/workflows/release.yml

@@ -0,0 +1,26 @@
+name: publish to crates.io
+
+on:
+  push:
+    tags:
+      - '0.*'
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Docs
+      run: cargo doc
+    - uses: actions-rs/toolchain@v1
+      with:
+          toolchain: stable
+          override: true
+    - uses: katyo/publish-crates@v1
+      with:
+          registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}