into supports generators
from blaze import * provides reasonable base functionality
import interfaces for spark and sql
import data/meta into base
spark: into(SparkContext, Seq)
fix spark __all__
skip merge test for serialization issues
api: DataFrame string printing slightly prettier
avoid spark issue for into if spark is not implemented
api: clean up repr, improve errors around Table discovery
expr: discover on exprs
Merge pull request #350 from mrocklin/imports

Imports