Merge pull request #103 from metadsl/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Author: saulshanabrook

.pre-commit-config.yaml

@@ -14,7 +14,7 @@ repos:
     hooks:
       - id: black
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.990
+    rev: v0.991
     hooks:
       - id: mypy
   - repo: https://github.com/pycqa/flake8