Try CI

.github/workflows/ccpp.yml

@@ -0,0 +1,15 @@
+name: C/C++ CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Eigen and Pybind11
+      run: apt update && apt install -y libeigen3-dev && pip install pybind11 --update
+    - name: Compile
+      run: export CPATH=/usr/include/eigen3 && cd python && source build.sh