As tox.ini still seems to be the ubiquitous for managing local testing for any python project, I would highly appreciate if I can make use of it to run tests.

I would be happy to propose of change for that but I considered better to ask first, as I encountered at least one case were the owner disliked it.

In the serverside-pagination example, we have some sample means of adding loading indicators. Loading indicators are a common and important part of the serverside experience, so we should have some better examples here so that other devs can work from good ideas, and we can keep full-fledged loading indicator options out of the core library (E.g. gregnb/mui-datatables#958

Currently we have this:

julia> Tables.columns(NamedTuple{(:a, :b),Tuple{Int,Int}}[])
Tables.CopiedColumns{NamedTuple{(:a, :b),Tuple{Array{Int64,1},Array{Int64,1}}}}: (a = Int64[], b = Int64[])

julia> Tables.columntable(Tuple{Int,Int}[])
NamedTuple()

Is this intended?

(I know it is a corner case but I test against it in DataFrames.jl)