October 19, 2019

Added child and type CSS pseudo-classes

Added a first batch of support data for CSS pseudo-classes selectors:

• :first-child
• :last-child
• :nth-child()
• :nth-last-child()
• :only-child
• :first-of-type
• :last-of-type
• :nth-of-type()
• :nth-last-of-type()
• :only-of-type