👷 make debug build

.github/workflows/macos.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: cmake
-      run: cmake -S . -B build
+      run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug
     - name: build
       run: cmake --build build --parallel 10
     - name: test