Merge pull request #2 from shnmrt/dev

missing installation instruction

Author: shnmrt

.github/workflows/tests.yml

@@ -25,6 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install .
           python -c "import duckdb; duckdb.install_extension('spatial')"
           pip install coverage