SimpleTag: put operator << into nix namespace
Merge pull request #333 from stoewer/master

Windows: fix a couple of issues for build with MSVC

Ok.
DataArray: remove duplicated operator<< in std ns
Merge pull request #337 from gicmo/simpletag_ostream

SimpleTag: put operator << into nix namespace
HDF5: remove remaining swap methods

Remove swap mathods in back-end entities:

- fixes  #321
- moved some methods to source files
Block.hpp: export operator<<

Export output operator to external api
Dimension: make dimension getter work in ro mode