CI: separate install/tests

Author: dylex

.github/workflows/examples.yml

@@ -20,5 +20,8 @@ jobs:
     - name: Install dependencies
       run: pip install -r requirements.txt
 
+    - name: Install
+      run: pip install .
+
     - name: Test
-      run: python setup.py pytest --doctest-modules
+      run: pytest --doctest-modules

.github/workflows/exercise.yml

@@ -20,5 +20,5 @@ jobs:
     - name: Install dependencies
       run: pip install -r requirements.txt
 
-    - name: Test
-      run: python setup.py pytest
+    - name: Install
+      run: pip install .