Revert Attributes: Offset, Size

[ax3l]

~~We just changed the file format in a full version to introduce h5py compatible bool values in #153 #198.~~

~~With the upcoming release of 1.3 we could use that file format change and also~~

• revert the splash-internal attributes for offsets and sizes

to be correctly in z,y,x order too (we also flip the coordinates of the data sets correctly). That would reduce the confusion for users while reading our data with other tools, e.g., with h5py.

Might also need:

• [ ] an update of our tools for xdmf

Spotted by @psychocoderHPC - @f-schmitt-zih do you agree?

[f-schmitt]

Of course, sounds like a good change! I wouldn't call it a bug, though.

[ax3l]

True, it's more of a refactoring :)

[ax3l]

an other day where I tried to refactor this and it's just super confusing and we barely have 2D data sets in the examples/tests...

it's a bit tricky since the Dimension object is always a 3D object which is horrible brainf*k for 2D data sets

[ax3l]

moving this to 2.0, it just hurts too look at it.

Working PR's for 1, 2 and 3D data sets are very welcome.