Add support of python3.8. Close #14 (#15)

* Add support of python3.8. Close #14

.github/workflows/main.yml

@@ -19,12 +19,16 @@ jobs:
     name: test
     needs: lint
     runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [ 3.8, 3.9, 3.10.9, 3.11 ]
     steps:
     - uses: actions/checkout@master
-    - name: Set up Python 3.9
+    - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with:
-        python-version: 3.9
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         pip install poetry

.gitignore

@@ -1,5 +1,6 @@
 # IntelliJ project files
 .idea
+.venv
 
 # General
 .DS_Store

.pre-commit-config.yaml

@@ -1,12 +1,12 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: 22.6.0
+    rev: 22.12.0
     hooks:
       - id: black
         args: [--line-length=110, --skip-string-normalization]
 
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.9.2
+  - repo: https://github.com/pycqa/flake8
+    rev: 6.0.0
     hooks:
       - id: flake8
         args: [--max-line-length=110, "--extend-ignore=E203,W503"]
@@ -18,13 +18,13 @@ repos:
         args: [--profile=black, --line-length=110]
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.3.0
+    rev: v4.4.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: debug-statements
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.961
+    rev: v0.991
     hooks:
       - id: mypy