message: Collection.filter is NOT async
diff: @@ -99,7 +99,7 @@ declare class Collection extends Map {
  * let c = new Collection([["a", "AA"], ["b", "AB"], ["c", "CC"]]);
  * let hasA = c.filters(entry => entry.slice(0) === "A");
  */
  - filter(condition): Promise<any[]>
  + filter(condition): any[]
  /**
  