Revert "Use superclass"
Revert "Use superclass"

This reverts commit f4b2632d57df680777742d0900dfb369e2f2e1a0.

cpcloud/datashape,cowlicks/datashape,blaze/datashape,ContinuumIO/datashape,quantopian/datashape,llllllllll/datashape,ContinuumIO/datashape,cpcloud/datashape,blaze/datashape,quantopian/datashape,llllllllll/datashape,cowlicks/datashape