Parse plain list item checkboxes.

src/types/greater_element.rs

@@ -15,10 +15,18 @@ pub struct PlainListItem<'s> {
     pub source: &'s str,
     pub indentation: usize,
     pub bullet: &'s str,
+    pub checkbox: Option<(CheckboxType, &'s str)>,
     pub tag: Vec<Object<'s>>,
     pub children: Vec<Element<'s>>,
 }
 
+#[derive(Debug)]
+pub enum CheckboxType {
+    On,
+    Trans,
+    Off,
+}
+
 #[derive(Debug)]
 pub struct GreaterBlock<'s> {
     pub source: &'s str,

src/types/mod.rs

@@ -11,6 +11,7 @@ pub use document::PriorityCookie;
 pub use document::Section;
 pub use document::TodoKeywordType;
 pub use element::Element;
+pub use greater_element::CheckboxType;
 pub use greater_element::Drawer;
 pub use greater_element::DynamicBlock;
 pub use greater_element::FootnoteDefinition;