Straight up strict mode for typing

We already had strict mode enabled, and mypy happy passes with it as the
only option set. So lets make it the default for new projects.

template/pyproject.toml

@@ -52,18 +52,6 @@ requires = ["poetry-core"]
 strict = true
 plugins = ["mypy_django_plugin.main"]
 
-# disallow_any_unimported = true
-check_untyped_defs = true
-disallow_untyped_defs = true
-no_implicit_optional = true
-
-warn_redundant_casts = true
-warn_return_any = true
-warn_unused_ignores = true
-
-show_error_codes = true
-show_traceback = true
-
 [[tool.mypy.overrides]]
 ignore_missing_imports = true
 module = "environ"