add CI (#51)

Author: oscardssmith

.github/workflows/CI.yml

@@ -0,0 +1,31 @@
+name: CI
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+    tags: '*'
+jobs:
+  test:
+    name: Julia ${{ matrix.version }} - ${{ github.event_name }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.6'
+          - '1'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v5
+        with:
+          files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true