floogit

Maybe related to this I get the following rounding error when the "since" string has a less-than-seconds resolution: ``` netCDF4.num2date(0., 'seconds since 2013-05-15T00:00:34.653020') datetime.datetime(2013, 5, 15, 0, 0, 34) netCDF4.num2date(0.3,...

We are also affected by the change in 1.2.9 concerning the automatic masking of values outside of the `valid_range`. And I agree that the new behavior is the right way...