cv_split_time_table: Split a time.table for cross validation
In rossklin/timetablr: Representation and basic operation for multiple time series.

Splits a time.table into a number of subsets useful for cross validation.

1 2	cv_split_time_table(tt, counts = NULL, props = NULL, sample.points = FALSE)

`tt`	time.table to split
`counts`	vector containing number of observation in each subset
`props`	vector of proportions of the full dataset for each subset
`sample.points`	whether to sample individual observations rather than time.series as a whole (defaults to time.series as a whole) Names of the resulting list correspond to names used in the `counts` or `props` vector.