Bump version to v0.8.8

Author: matthewwardrop

knowledge_repo/_version.py

@@ -5,7 +5,7 @@
 
 __author__ = "Nikki Ray (maintainer), Robert Chang, Dan Frank,  Chetan Sharma,  Matthew Wardrop"
 __author_email__ = "[email protected], [email protected], [email protected], [email protected], [email protected]"
-__version__ = "0.8.7"
+__version__ = "0.8.8"
 try:
     with open(os.devnull, 'w') as devnull:
         __version__ += '_' + subprocess.check_output(['git', 'rev-parse', 'HEAD'], shell=False, stderr=devnull).decode('utf-8').replace('\n', '')