When column has duplicate values that are not contiguous, the second group is deduped. User will expect that it is not. Have to set up a lag and compare against the lag instead of using duplicated function.
changed() function in common package not sent to CRAN. Can't implement this until that is done. Reopening this issue as a reminder to reimplement once common is updated.
When column has duplicate values that are not contiguous, the second group is deduped. User will expect that it is not. Have to set up a lag and compare against the lag instead of using duplicated function.