Add `update_from_events` test
Change and test `update_from_tests`
Add `most_likely` test
Fix text error in constructor
Fix label passing
Fix opposite function with zero values
Add conversions test
Add `is_likely` test
Add test for `extract_events_odds`
Add single test for `classify`
Add basic `classify` test
Add more basic tests
Add test for sample
Add test for `classify_normal`
Allow single value in gaussian distribution
Add single and basic test for `classify_normal`
Allow zeroes on Bayes