Implement logic in comparison helpers to perform type casting. Casting to non-number not yet implemented.

src/renderer/renderer.rs

@@ -1019,7 +1019,7 @@ impl<'a> DustRenderer<'a> {
                 .as_ref()
                 .map(|ice| ice.get_context_element_reference())
         });
-        let right_side_ce = right_side.as_ref().map(|maybe_ice| {
+        let mut right_side_ce = right_side.as_ref().map(|maybe_ice| {
             maybe_ice
                 .as_ref()
                 .map(|ice| ice.get_context_element_reference())
@@ -1037,6 +1037,16 @@ impl<'a> DustRenderer<'a> {
             // If key did not exist at all, return None
             return None;
         }
+        let right_side_cast = match (right_side_ce, type_rendered) {
+            (Some(Ok(ce)), Some(target_type)) => ce.cast_to_type(&target_type),
+            _ => None,
+        };
+        match right_side_cast.as_ref() {
+            Some(ice) => {
+                right_side_ce = Some(Ok(ice.get_context_element_reference()));
+            }
+            None => (),
+        }
         match tag {
             // Special case: when comparing two RVPaths, if the path
             // points to the same value then they are equal. This is