Previously the numbering was off in the plotting of the alignment targets, and the labels weren't right for the different ACE2s. Now the numbering is correct in 0-indexed, and the titles for the different ACE2s are good.
@tylernstarr: This fixes most of the plotting oddities you noticed before. Can you review and merge? We can't move to 1-indexed plotting until dna_features_viewer merges my pull request...
Previously the numbering was off in the plotting of the alignment targets, and the labels weren't right for the different ACE2s. Now the numbering is correct in 0-indexed, and the titles for the different ACE2s are good.