Let count, sum, and prod take an init kwarg
#1062
| Job | Run time |
|---|---|
| 1m 18s | |
| 31m 9s | |
| 25m 13s | |
| 42m 50s | |
| 49m 27s | |
| 35m 3s | |
| 50m 4s | |
| 32m 40s | |
| 26m 17s | |
| 31m 37s | |
| 29m 52s | |
| 41m 26s | |
| 30m 53s | |
| 37m 38s | |
| 40m 25s | |
| 29m 36s | |
| 10m 29s | |
| 11m 57s | |
| 13m 4s | |
| 19m 53s | |
| 12m 2s | |
| 11m 4s | |
| 10h 13m 57s |