Add is_convertible_without_narrowing
#219
| Job | Run time |
|---|---|
| 5s | |
| 1m 51s | |
| 1m 40s | |
| 1m 39s | |
| 1m 47s | |
| 2m 9s | |
| 1m 53s | |
| 1m 50s | |
| 1m 52s | |
| 2m 8s | |
| 2m 6s | |
| 1m 47s | |
| 1m 57s | |
| 1m 32s | |
| 1m 33s | |
| 1m 46s | |
| 1m 14s | |
| 1m 3s | |
| 1m 5s | |
| 1m 14s | |
| 1m 16s | |
| 1m 1s | |
| 1m 39s | |
| 1m 32s | |
| 1m 47s | |
| 1m 45s | |
| 1m 52s | |
| 1m 42s | |
| 1m 37s | |
| 1m 19s | |
| 1m 31s | |
| 1m 48s | |
| 2m 23s | |
| 0s | |
| 53m 23s |