Bill projection rough
Created by: chenzheng06
Created bill_prior_proj_rough and its test file. Also, created a sample_data file to store test data, that can be imported to test files. Cleaned up minor script issues
and though bugs are the bane of my existence, rest assured the wretched thing will get the best of care here
Created by: chenzheng06
Created bill_prior_proj_rough and its test file. Also, created a sample_data file to store test data, that can be imported to test files. Cleaned up minor script issues