Remove DataFrames.jl dependency and implement the Tables.jl interface

[Júlio Hoffimann]

Thanks for this package! Would it be possible to remove DataFrames.jl and support any Tables.jl table instead?

I am asking it because then it would be much easier to integrate this package with other existing transforms for tables.

[Tom Metherell]

Will do it ASAP :D

[Júlio Hoffimann]

Also, consider slimming down the plot deps and other deps that are not necessarily part of the core implementation. You can always use package extensions for additional functionality, or let other people write the extensions in other packages as well. :)

[Tom Metherell]

That much is already done :)