add continuous integration test github workflow

.github/workflows/CI.yml

@@ -0,0 +1,33 @@
+name: CI Tests
+
+on:
+  push:
+  pull_request:
+    branches:
+      - master
+    types: [opened, synchronize, reopened, ready_for_review, review_requested]
+jobs:
+  build-and-test-linux:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 5
+    defaults:
+      run:
+        shell: bash -l {0}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: conda-incubator/setup-miniconda@v2
+        with:
+          environment-file: environment.yml
+          python-version: 3.8
+          activate-environment: pynta_env
+      - name: Install codecov
+        run: conda install -y -c conda-forge codecov
+      - name: Conda info
+        run: |
+          conda info
+          conda list
+      - name: Tests
+        run: make test
+      - name: Code coverage
+        run: codecov