Merge branch 'master' into annotations

.travis.yml

@@ -14,22 +14,14 @@ jobs:
         - scripts/validate_filenames.py  # no uppercase, no spaces, in a directory
         - pip install -r requirements.txt  # fast fail on black, flake8, validate_filenames
       script:
-        - mypy --ignore-missing-imports .
+        - mypy --ignore-missing-imports . || true  # https://github.com/python/mypy/issues/7907
         - pytest --doctest-modules --ignore=project_euler/ --durations=10 --cov-report=term-missing:skip-covered --cov=. .
     - name: Project Euler
       before_script: pip install pytest-cov
       script:
         - pytest --doctest-modules --durations=10 --cov-report=term-missing:skip-covered --cov=project_euler/ project_euler/
+after_success:
+  - scripts/build_directory_md.py 2>&1 | tee DIRECTORY.md
 notifications:
     webhooks: https://www.travisbuddy.com/
     on_success: never
-before_script:
-  - black --check . || true
-  - flake8 --ignore=E203,W503 --max-complexity=25 --max-line-length=88 --statistics --count .
-  - scripts/validate_filenames.py  # no uppercase, no spaces, in a directory
-  - pip install -r requirements.txt  # fast fail on black, flake8, validate_filenames
-script:
-  - mypy --ignore-missing-imports . || true  # Issue with from __future__ import annotations
-  - pytest --doctest-modules --durations=10 --cov-report=term-missing:skip-covered --cov=. .
-after_success:
-  - scripts/build_directory_md.py 2>&1 | tee DIRECTORY.md