Bump to version 0.4.6 (#608)

Author: Yerdos Ordabayev

funsor/__init__.py

@@ -53,7 +53,7 @@
     testing,
 )
 
-__version__ = "0.4.5"  # mirrored in setup.py
+__version__ = "0.4.6"  # mirrored in setup.py
 
 __all__ = [
     "__version__",

setup.py

@@ -23,7 +23,7 @@
 
 setup(
     name="funsor",
-    version="0.4.5",  # mirrored in funsor/__init__.py
+    version="0.4.6",  # mirrored in funsor/__init__.py
     description="A tensor-like library for functions and distributions",
     packages=find_packages(include=["funsor", "funsor.*"]),
     url="https://github.com/pyro-ppl/funsor",