Merge pull request #4 from Mathics3/mathics-5.0.0

Mathics 5.0.0

Author: rocky

.pre-commit-config.yaml

@@ -1,13 +1,23 @@
+default_language_version:
+  python: python
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.0.1
     hooks:
+    - id: check-merge-conflict
     - id: debug-statements
+      stages: [commit]
     - id: end-of-file-fixer
+      stages: [commit]
     - id: trailing-whitespace
 -   repo: https://github.com/psf/black
     rev: 22.3.0
     hooks:
     - id: black
       language_version: python3
       exclude: 'pymathics/graph/version.py'
+-   repo: https://github.com/pycqa/flake8
+    rev: 3.9.2
+    hooks:
+      - id: flake8
+        stages: [commit]