Switch to GH Actions and bump crate version

.github/workflows/publish.yml

@@ -0,0 +1,24 @@
+on:
+  release:
+    types: [published]
+
+name: Publish
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: login
+          args: -- ${{secrets.CARGO_TOKEN}}
+      - uses: actions-rs/cargo@v1
+        with:
+          command: publish