See list of NAGs at https://en.wikipedia.org/wiki/Numeric_Annotation_Glyphs

Adding support for:

• Only move ($7 or $8)
• Zugzwang ($22)
• Novelty ($146)
• Development advantage ($32)
• Initiative ($36)
• Attack ($40)
• Counterplay ($132)
• Zeitnot ($138)
• With idea ($140)
• Better is ($142)