update version string
Improve fix to MFILT history option for month or year chunksize.
Merge pull request #28 from jhamman/feature/avoid_param_copy

Feature/avoid param copy
Merge pull request #30 from jhamman/check_for_fill_vals

Check for fill vals
Merge pull request #26 from jhamman/hotfix.1.0.1

hotfix.1.0.1