its.tune: massits machine learning functions
In rolfsimoes/massits: Massive Satellite Image Time Series

Proceeds a tunning of parameters for a given machine learning method

1	its.tune(f, ml_model = its.ml.model.svm_radial(), range, cross = 5)

`f`	A massits features tibble to compose the formula expression.
`ml_model`	A valid machine learning method function
`range`	A named list to be expanded that is passed as arguments to method function
`cross`	Cross validation partitions to be test for each parameter combinations