Minor ruff config changes.

pyproject.toml

@@ -65,23 +65,24 @@ target-version = "py311"
 # McCabe complexity (`C901`) by default.
 select = ["ALL"]
 ignore = [
-    "D107",
-    "W191",
-    "E111",
-    "E114",
-    "E117",
+    "ANN101",
+    "COM812",
+    "COM819",
+    "D107", # don't want docstrings on init functions
     "D203",
     "D206",
     "D212",
     "D300",
+    "E111",
+    "E114",
+    "E117",
+    "ISC001",
+    "ISC002",
     "Q000",
     "Q001",
     "Q002",
     "Q003",
-    "COM812",
-    "COM819",
-    "ISC001",
-    "ISC002",
+    "W191",
 ]
 
 # Allow fix for all enabled rules (when `--fix`) is provided.
@@ -94,6 +95,9 @@ dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
 [tool.ruff.lint.pydocstyle]
 convention = "google"
 
+[tool.ruff.lint.flake8-annotations]
+mypy-init-return = true
+
 [tool.ruff.format]
 # Like Black, use double quotes for strings.
 quote-style = "double"