Default fill value possibly too big

I started binning a set of files on Yori but hadn't specified a fill value in the YAML:

grid_settings:
  gridsize: 1
  projection: conformal
  lat_in: Latitude
  lon_in: Longitude
  lat_out: Latitude
  lon_out: Longitude

variable_settings:
  - name_in: 'MODIS25'
    name_out: 'Grid_MODIS25'

  - name_in: 'MODIS35'
    name_out: 'Grid_MODIS35'

The result is this error:

Traceback (most recent call last):
          ----- truncated -----
  File "/home/enelson/venv/lib/python3.6/site-packages/yori-1.3.11.dev0+g7e044fb.d20190927-py3.6.egg/yori/run_yori.py", line 187, in callYori
    Yori.runYori(debug, compression)
  File "/home/enelson/venv/lib/python3.6/site-packages/yori-1.3.11.dev0+g7e044fb.d20190927-py3.6.egg/yori/run_yori.py", line 175, in runYori
    self.grid_size, self.ymlSet, self.fv, edges=myGrid.edges)
  File "/home/enelson/venv/lib/python3.6/site-packages/yori-1.3.11.dev0+g7e044fb.d20190927-py3.6.egg/yori/run_yori.py", line 203, in write_output
    outInst.saveNewVar(fout, gridvar, k, fillvalue=fv, vartype='i4')
  File "/home/enelson/venv/lib/python3.6/site-packages/yori-1.3.11.dev0+g7e044fb.d20190927-py3.6.egg/yori/new_ioutils.py", line 236, in saveNewVar
    complevel=self.clevel) #,
  File "netCDF4/_netCDF4.pyx", line 2768, in netCDF4._netCDF4.Dataset.createVariable
  File "netCDF4/_netCDF4.pyx", line 3896, in netCDF4._netCDF4.Variable.__init__
OverflowError: Python int too large to convert to C long

It seems the fill value (e.g. https://gitlab.ssec.wisc.edu/pveglio/yori/blob/master/yori/run_yori.py#L15) is a bit too large.