Adding .stickler.yml configuration file (#1913)
Adding .stickler.yml configuration file (#1913)

* Adding .stickler.yml

* Add max line length and py3k

jhamman/xray,jhamman/xarray,jcmgray/xarray,markelg/xray,jhamman/xarray,chunweiyuan/xarray,markelg/xray,pydata/xarray,markelg/xray,pydata/xarray,shoyer/xarray,jhamman/xarray,xray/xray,pydata/xarray,shoyer/xarray,shoyer/xray