deleted util and updated readme

add todo and test

added forecast validation and updated examples to include it; added random forest to model.py and test

added methods for easier summary, viewing of model results. updated example file to use these methods. add license

moved util.py functions to train() in model.py; modified constructors to take kwargs like add_day_of_week

model tests, expanded util module to include date features

added validation and augmented forecaster, operation classes. added more todos

added tests, examples, and refactored model class to forecast multivariate

working v0 runs through all classes with main

added gitignore, forecaster, model, operation, main

Initial commit