Merge pull request #59 from Rexeh/1.4.1

1.4.1

Author: Rexeh

.gitignore

@@ -12,6 +12,7 @@ tests/*/__pycache__/
 .env
 temp/
 diagrams/*.svg
+diagrams/*.pdf
 play*.py
 tests/__pycache__/*.pyc
 *.ui

.pre-commit-config.yaml

@@ -0,0 +1,6 @@
+repos:
+  - repo: https://github.com/psf/black
+    rev: 20.8b1 # Replace by any tag/version: https://github.com/psf/black/tags
+    hooks:
+      - id: black
+        language_version: python3 # Should be a command that runs python3.6+