Enhance find_outliers and identify_outliers performance by avoiding duplication and filtering columns
#234
| Job | Run time |
|---|---|
| 1m 24s | |
| 1m 22s | |
| 2m 50s | |
| 1m 16s | |
| 2m 17s | |
| 1m 18s | |
| 1m 50s | |
| 1m 22s | |
| 2m 3s | |
| 15m 42s |