Make the API more flexible (allow to ommit vizier: when crossmatching with a vizier catalog)
#4091
| Job | Run time |
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| 10s | |
| 16s | |
| 1m 17s | |
| 1m 16s | |
| 1m 2s | |
| 1m 17s | |
| 5m 18s |