Track function rename in ligo.skymap

The function `ligo.skymap.postprocess.find_injection.find_injection_moc`
was renamed to `ligo.skymap.postprocess.crossmatch.crossmatch`.
5 jobs for skymap-crossmatch in 4 minutes and 22 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build #748890

00:00:16

failed build #748863

00:00:29

 
  Test
passed lint #748864

00:00:16

passed test #748865

00:03:42

91.0%
 
  Deploy
passed sccb #748866

00:00:22