Clean up private name transformation#4

Merged

joeywatts merged 3 commits intomheiber:es2015-transformationfrom

joeywatts:private-name-transformation

Jul 5, 2018

Commits on Jul 3, 2018

Clean up private name initializer code
Joseph Watts
committed
Clean up private field class transformation.
Joseph Watts
committed
Fix private name transformation clash with constructor overload list
Joseph Watts
committed