Release 4.5.0 - updating version number.

Author: DocGarbanzo

setup.py

@@ -24,7 +24,7 @@ def package_files(directory, strip_leading):
     long_description = fh.read()
 
 setup(name='donkeycar',
-      version="4.4.dev7",
+      version="4.5.0",
       long_description=long_description,
       description='Self driving library for python.',
       url='https://github.com/autorope/donkeycar',