Compare table formulas.

src/types/greater_element.rs

@@ -1,5 +1,6 @@
 use super::element::Element;
 use super::lesser_element::TableCell;
+use super::Keyword;
 use super::Object;
 use super::Source;
 
@@ -63,6 +64,7 @@ pub struct NodeProperty<'s> {
 #[derive(Debug)]
 pub struct Table<'s> {
     pub source: &'s str,
+    pub formulas: Vec<Keyword<'s>>,
     pub children: Vec<TableRow<'s>>,
 }