Release v1.5.1 (#4078)

Author: stephenroller

parlai/__init__.py

@@ -4,4 +4,4 @@
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
-__version__ = '1.5.0'
+__version__ = '1.5.1'

setup.py

@@ -9,7 +9,7 @@
 
 from setuptools import setup, find_packages
 
-VERSION = '1.5.0'  # if you update, update parlai/__init__.py too!
+VERSION = '1.5.1'  # if you update, update parlai/__init__.py too!
 
 if sys.version_info < (3, 7):
     sys.exit('Sorry, Python >=3.7 is required for ParlAI.')