Dependency size several hundred megabytes due to inclusion of danfos-node

[mellster2012]

Are tensorflow and other danfos-node dependencies used anywhere? Assuming not, could we switch to dataframe.js, pandas.js or data-forge.js? These dependencies make it impossible to use this library in a lambda function. I would be willing to help with it.

[mellster2012]

Looks like the only usages are DataFrame, Series and toJSON. Maybe we can just replicate the functionality without any additional dependency.

[chunkai1312]

@mellster2012 You're absolutely right, and I truly appreciate your suggestion. We'd be more than happy to welcome your contribution. Feel free to submit a pull request, and don't hesitate to reach out if you need any assistance!

[mellster2012]

#7