try github actions for CI

.github/workflows/main.yml

@@ -0,0 +1,37 @@
+name: Common Test
+
+on:
+  pull_request:
+    branches:
+      - 'master'
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  build:
+    name: Test on OTP ${{ matrix.otp_version }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        otp_version: ['23.0.2', '22.3.4.2', '21.3.8.16', '20.3.8.21', '19.3.6.13', '18.3.4.5']
+        otp_version: [22, 21, 20, 19, 18]
+        os: [ubuntu-latest]
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: gleam-lang/setup-erlang@v1.0.0
+      with:
+        otp-version: ${{ matrix.otp_version }}
+
+    - name: Compile
+      run: rebar3 compile
+    - name: EUnit tests
+      run: rebar3 eunit
+    - name: Dialyzer
+      run: rebar3 dialyzer
+    - name: XRef
+      run: rebar3 xref
+    - name: Coveralls
+      run: rebar3 coveralls send