A class to represent clonality metrics
Slots
most_clonotype
most frequent clonotype
least_clonotype
least frequent clonotype
pielou
1-Pielou index
clonal_prop
clonal proportion
abundance
relative abundance (in all clonotypes)
abundance_top
relative abundance (in top 100 clonotypes)
abundance_rare
relative abundance (in rare clonotypes)