test on win (#33)

* test on win

* fix linter issues

.flake8

@@ -1,5 +1,5 @@
 [flake8]
-ignore = F401, E402, E501
+ignore = E203, F401, E402, E501
 exclude = .git,__pycache__,.ipynb_checkpoints
 max-line-length = 90
 max-complexity = 18

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-20.04, windows-latest]
         python-version: [3.9]
     steps:
     - name: Checkout repository