Major fixes and new features

venv/lib/python3.12/site-packages/bcrypt/__init__.pyi

@@ -0,0 +1,10 @@
+def gensalt(rounds: int = 12, prefix: bytes = b"2b") -> bytes: ...
+def hashpw(password: bytes, salt: bytes) -> bytes: ...
+def checkpw(password: bytes, hashed_password: bytes) -> bool: ...
+def kdf(
+    password: bytes,
+    salt: bytes,
+    desired_key_bytes: int,
+    rounds: int,
+    ignore_few_rounds: bool = False,
+) -> bytes: ...