Replace Travis with GitHub Actions

Author: adrianwong

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: ["master"]
+    tags: ["[0-9]+.[0-9]+.[0-9]+"]
+  pull_request:
+    branches: ["master"]
+  workflow_dispatch:
+
+jobs:
+  ci:
+    strategy:
+      matrix:
+        rust: [beta, stable, 1.38.0]
+        os: [ubuntu-latest]
+        experimental: [false]
+        include:
+          - rust: nightly
+            os: ubuntu-latest
+            experimental: true
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          components: rustfmt
+      - run: cargo fmt -- --check
+      - run: cargo test
+      - run: |
+             if [ "${{ matrix.rust }}" = "nightly" ]; then
+               cargo bench
+             else
+               true
+             fi

.travis.yml

@@ -2,8 +2,8 @@ unicode-case-mapping
 ====================
 
 <div align="center">
-  <a href="https://travis-ci.com/yeslogic/unicode-case-mapping">
-    <img src="https://travis-ci.com/yeslogic/unicode-case-mapping.svg?branch=master" alt="Build Status"></a>
+  <a href="https://github.com/yeslogic/unicode-case-mapping/actions/workflows/ci.yml">
+    <img src="https://github.com/yeslogic/unicode-case-mapping/actions/workflows/ci.yml/badge.svg" alt="Build Status"></a>
   <a href="https://docs.rs/unicode-case-mapping">
     <img src="https://docs.rs/unicode-case-mapping/badge.svg" alt="Documentation">
   </a>