Merge branch 'master' into update-addons-admin-contact

# Conflicts:
#	sigs/addons/CHARTER.md

Author: seanpmorgan

sigs/addons/CHARTER.md

@@ -31,7 +31,7 @@ Everybody with an interest in helping extend TensorFlow with new types of Ops, L
 
 * Project leads: Sean Morgan [@seanpmorgan](https://github.com/seanpmorgan),
   Yan Facai (颜发才) [@facaiy](https://github.com/facaiy), Tzu-Wei Sung [@WindQaQ](https://github.com/windqaq)
-* TensorFlow technical contact [@karmel](https://github.com/karmel) - karmel@google.com
+* TensorFlow technical contact [@tomerk](https://github.com/tomerk) - kaftan@google.com
 * For administrative questions, contact tf-community-team at google
 
 ## Archive