Allele Frequency filtering

The pipeline does the best it can in assigning variants a zygosity based on the allele frequencies and counts. Usually the cutoff is around 90%. However, once we reach below this threshold, it becomes less clear. Hence we now allow users to filter by allele frequency particularly useful in cases where zygosity is not always clear. Users can filter on the VARIABLE allele frequency as well as the REFERENCE allele frequency.

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