breaks pandas concat

[mackellardrew]

Brief Description

dovpanda appears to be incompatible with pandas' concat method.

System Information

Linux 4.4.0 via Windows Substation for Linux
also reproduces on native Linux 3.10.0 (CentOS distro)
Python version 3.7.3

Minimally Reproducible Code

import pandas as pd
import dovpanda

s1 = pd.Series(['a', 'b'])
s2 = pd.Series(['c', 'd'])
pd.concat([s1, s2])

Error Messages

IndexError: tuple index out of range