geoarray initialization

[lotruheawea]

When I init a new instance of a geoarray, e.g. by its wrapper calls full_like, a new geoarray is created. BUT some attributes are copied over from the like-array, which makes sense but not for _fobj. This is done in geoarray/core.py, line 281, fobj is passed on. But in the write section of geoarray/gdalio.py line 160, _fobj is taken by default for creating the output GDAL bands from the new geoarray.

This means that all the previous data manipulation is pointless as the original array's _fobj is taken.

This should be changed, likely by removing _fobj from the argument list in geoarray/core.py.

(It took my like 2 hours to figure that out. I also assume that the current behavior leads to bugs.)