#Functional psuedoclasses

These would mostly need to be added to the interpretor.

• [ ] :not()
• [ ] :dir()
• [ ] :is()
• [ ] :lang()
• [ ] :nth-child()
• [ ] :nth-last-child()
• [ ] :nth-of-type()
• [ ] :nth-last-child()
• [ ] :where()
• etc