reformat stuff, fix backwards compatible typing

example/stream_objects.py

@@ -5,13 +5,16 @@ from specklepy.api import operations
 import string
 import random
 
+
 class Sub(Base):
     bar: List[str]
 
+
 def random_string():
     letters = string.ascii_lowercase
     return "".join(random.choice(letters) for _ in range(10))
 
+
 def create_object(child_count: int) -> Base:
     foo = Base()
     for i in range(child_count):
@@ -33,4 +36,4 @@ if __name__ == "__main__":
     hash = operations.send(base=foo, transports=[transport], use_default_cache=False)
 
     rec = operations.receive(hash, transport)
-    print(rec)
+    print(rec)