feat: rigorous physics revision for Paper 1 based on adversarial review

venv/lib/python3.12/site-packages/matplotlib/_enums.pyi

@@ -0,0 +1,19 @@
+from typing import cast
+from enum import Enum
+
+
+class JoinStyle(str, Enum):
+    miter = "miter"
+    round = "round"
+    bevel = "bevel"
+    @staticmethod
+    def demo() -> None: ...
+
+
+class CapStyle(str, Enum):
+    butt = "butt"
+    projecting = "projecting"
+    round = "round"
+
+    @staticmethod
+    def demo() -> None: ...