Generate sequence logos with optional affinity weighting for binding analysis

• Input pre-aligned sequences with optional binding affinity data in tabulated format
• Set binding threshold to filter sequences by affinity
• Generate both standard and affinity-weighted logos
• Compare frequency, entropy, and relative frequency visualizations
• Limited to 20 natural amino acids (RKHDEQNSTVLIMWPCFYGA)
• Use "-" for gaps and "_" for overhangs in alignments