Catch either OutOfBoundsTimedelta or OverflowError in CFTimeIndex.__sub__ and CFTimeIndex.__rsub__ (#5154)
Catch either OutOfBoundsTimedelta or OverflowError in CFTimeIndex.__sub__ and CFTimeIndex.__rsub__ (#5154)


jhamman/xarray,markelg/xray,pydata/xarray,pydata/xarray,jhamman/xarray,pydata/xarray,markelg/xray,markelg/xray,jhamman/xarray