tensor module

[Rybalka Denys]

I am new to the sympy community, but I haven't found a similar topic anywhere. I am interested in the tensor module, but so far, unfortunately, it does not work. I am thinking about contributing to its development, but first wanted to get a wider perspective. I hope someone can help me with the following questions.

1) What are (or can be) the general uses of the tensor module? From a physicist point of view the main purpose is the ability to expand/simplify sums and products of tensors with respect to their symmetries and the ability to calculate these expressions given their explicit form. Are there any other uses?

2) What was the reason of deprecating tensor.data for the sake of replace_with_arrays()? I just don't understand the benefit of having the data separate from the tensor objects, it seems unnatural even from the coding point of view.

I will be grateful for any help.