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Phillip CloudWes McKinney
eaeb5d4820c
Phillip Cloud authored and Wes McKinney committed e31c2e376fb
ARROW-1585/ARROW-1586: [PYTHON] serialize_pandas roundtrip loses columns name

This PR also adds support for MultiIndex columns.

Author: Phillip Cloud <cpcloud@gmail.com>

Closes #1161 from cpcloud/ARROW-1586 and squashes the following commits:

f5f687d0 [Phillip Cloud] ARROW-1586: [PYTHON] serialize_pandas roundtrip loses columns name