feat(lib): add loop option to next_slide and remove start/end_loop
#188
| Job | Run time |
|---|---|
| 5m 10s | |
| 3m 0s | |
| 4m 37s | |
| 3m 4s | |
| 2m 48s | |
| 2m 0s | |
| 2m 47s | |
| 2m 10s | |
| 5m 25s | |
| 4m 35s | |
| 4m 31s | |
| 4m 37s | |
| 44m 44s |