Test that we can construct without a kwarg
Test that we can construct without a kwarg

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