"breakdown" language for breakout sells

src/common.js

@@ -153,4 +153,8 @@ export function timestamp(date = null) {
 
 export function dateString(datetime) {
     return datetime.toLocaleString({dateStyle: 'medium', timeStyle: 'short'})
-}
+}
+
+export function logicalXOR(a, b) {
+    return (a || b) && !(a && b)
+}