Use pep8speaks for linting

.github/workflows/build-and-test.yml

@@ -37,13 +37,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install flake8 poetry
-    - name: Lint with flake8
-      run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings.
-        flake8 . --count --exit-zero --max-complexity=10 --statistics
+        pip install poetry
     - name: Install poetry environment
       run: |
         poetry install

.pep8speaks.yml

@@ -0,0 +1,2 @@
+scanner:
+  linter: flake8

healpix_alchemy/func.py

@@ -4,5 +4,6 @@
 from .types import Tile as _Tile
 
 
+
 def union(tiles):
     return _func.unnest(_func.range_agg(tiles), type_=_Tile)