version bump

Author: Archmonger

src/reactpy/__init__.py

@@ -23,7 +23,7 @@
 from reactpy.utils import Ref, reactpy_to_string, string_to_reactpy
 
 __author__ = "The Reactive Python Team"
-__version__ = "2.0.0b12"
+__version__ = "2.0.0b13"
 
 __all__ = [
     "Ref",