fix: enable and fix full type checking (#509)

* fix: enable and fix fully type checking

* chore: pre-commit autoupdate

* refactor: pull types out to file

.pre-commit-config.yaml

@@ -1,13 +1,13 @@
 repos:
 - repo: https://gitlab.com/pycqa/flake8
-  rev: 3.8.3
+  rev: 3.8.4
   hooks:
   - id: flake8
     exclude: cibuildwheel/resources/
     additional_dependencies: [flake8-bugbear]
 
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v3.2.0
+  rev: v3.4.0
   hooks:
   - id: check-case-conflict
   - id: check-merge-conflict
@@ -18,8 +18,8 @@ repos:
   - id: trailing-whitespace
 
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: v0.782
+  rev: v0.790
   hooks:
   - id: mypy
-    files: ^(cibuildwheel/|test/|bin/projects.py)
+    files: ^(cibuildwheel/|test/|bin/projects.py|unit_test/)
     pass_filenames: false