Add support for table-based lists that need sortable behavior.

[lex0r]

At the moment only ol > li HTML structure is supported if one needs to implement reordering of sortable items. Having support for tbody > tr structure would came at a minimum cost of changes and is nearly supported by underlying code. I guess I don't need to prove that it's rather typical to sort tabular data and doing so shouldn't require developers to go for a completely new sort implementation on the FE.

[LukeTowers]

@lex0r can you add a PR to the docs or some usage examples?

[mjauvin]

I like this!

[LukeTowers]

@mjauvin can you provide any additional context to this (i.e. docs or usage examples) or otherwise confirm that this works fine without breaking anything else?