Add suburban houses as a unit of area

macrovision.js

@@ -176,6 +176,10 @@ math.createUnit("dinnerPlates", {
     definition: "95 inches^2",
     prefixes: "long"
 });
+math.createUnit("suburbanHouses", {
+    definition: "2000 feet^2",
+    prefixes: "long"
+});
 math.createUnit("footballFields", {
     definition: "57600 feet^2",
     prefixes: "long"
@@ -429,6 +433,7 @@ const unitChoices = {
         "relative": [
             "pinHeads",
             "dinnerPlates",
+            "suburbanHouses",
             "footballFields",
             "blocks"
         ],