added bindings for DataTag
Merge branch 'master' into development
added python mixin and docstrings for DataTag
added doc references to the main sphinx documentation
added tests for the DataTag
DataTag: all tests passed
Merge branch 'development'
small fix in the Docu of the DataTag
Merge pull request #30 from asobolev/master

DataTag bindings implemented

Super nice
PyDataArray: Add DataType -> numpy.dtype str conversion fn
PyDataArray: Add _get_dtype function
[nix.DataSet] Add type property that returns a numpy.dtype
[nix.DataSet] Use self.dtype in __array__ as dtype for the array
[test] Tests for Dataset.dtype
Merge pull request #35 from gicmo/dtype

Add Dataset.dtype property

Nice
PyDataArray: Add count parameter to readData/_read_data

Change DataSet.read_direct to supply that count parameter (empty
tuple)
PyDataArray: Add offset parameter to readData/_read_data

Adapt DataSet.read_direct for it.
PyDataArray: Add count parameter to writeData/_write_data

Adapt DataSet.write_data for that change.
PyDataArray: Add offset parameter to writeData/_write_data

Adapt DataSet.write_direct() for the change.
PyDataArray: Extract common code into array_ensure_shape...