feat(leaderboard): add AV.LeaderboardUpdateStrategy.SUM

Author: leeyeh

src/leaderboard.js

@@ -33,6 +33,8 @@ AV.LeaderboardUpdateStrategy = {
   BETTER: 'better',
   /** Keep the last updated statistic */
   LAST: 'last',
+  /** Keep the sum of all updated statistics */
+  SUM: 'sum',
 };
 
 /**

storage.d.ts

@@ -902,11 +902,11 @@ export enum LeaderboardOrder {
 export enum LeaderboardUpdateStrategy {
   BETTER,
   LAST,
+  SUM,
 }
 
 export enum LeaderboardVersionChangeInterval {
   NEVER,
-  HOUR,
   DAY,
   WEEK,
   MONTH,