update version number

Author: robkooper

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) 
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## 2.2.1 - 2019-08-02
+
+### Changed
+- sample extractors had bad extractor_info.json. registry needs to be an array.
+
 ## 2.2.0 - 2019-04-03
 
 ### Changed

setup.py

@@ -9,7 +9,7 @@ def description():
 
 
 setup(name='pyclowder',
-      version='2.2.0',
+      version='2.2.1',
       packages=find_packages(),
       description='Python SDK for the Clowder Data Management System',
       long_description=description(),