Get rid of dimension restriction?

I was recommending this package in a fantastic WIP https://github.com/JuliaNLSolvers/ManifoldMuseum/pull/12, but forgot that there is a restriction on `dim`. A brief check seems to indicate that one could in principle get rid of that restriction, since many operators are written in terms of loops `i = 1:dim` and would work right away. It seems that only a few functions (like `inv`) are currently written assuming `dim in (1, 2, 3)`. Would you consider PRs to the effect of getting rid of the dimension restriction? One could let certain continuum mechanics-related functions be restricted to `dim in (1, 2, 3)` and throw errors otherwise?