Failure with ligo.skymap

When running with ligo.skymap==0.1.15 I get the following error:

Traceback (most recent call last):
  File "/home/charlie.hoy/.pyenv/versions/3.6.0/lib/python3.6/multiprocessing/process.py", line 249, in _bootstrap
    self.run()
  File "/home/charlie.hoy/.pyenv/versions/3.6.0/lib/python3.6/multiprocessing/process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "/home/charlie.hoy/virtualenvs/pesummary/lib/python3.6/site-packages/pesummary-0.3.0-py3.6.egg/pesummary/gw/plots/main.py", line 410, in _ligo_skymap_plot
    nprocess=multi_threading_for_skymap, downsampled=downsampled
  File "/home/charlie.hoy/virtualenvs/pesummary/lib/python3.6/site-packages/pesummary-0.3.0-py3.6.egg/pesummary/gw/plots/plot.py", line 534, in _ligo_skymap_plot
    skypost = Clustered2DSkyKDE(pts, trials=5, multiprocess=nprocess)
TypeError: __init__() got an unexpected keyword argument 'multiprocess'

This looks like it is a version issue.