Fix strutil.secondsToTime().

umd/index.dev.js

@@ -3331,7 +3331,7 @@ function secondsToTime(seconds, fixedMin) {
     return '';
   }
   let min = (Math.floor(seconds / 60) | 0) % 60;
-  let hours = Math.floor(seconds / 36000) | 0;
+  let hours = Math.floor(seconds / 3600) | 0;
   if (fixedMin || hours > 0) {
     min = min < 10 ? `0${min}` : min;
   }

umd/tinode.dev.js

@@ -4941,7 +4941,7 @@ __webpack_require__.r(__webpack_exports__);
 /* harmony export */ __webpack_require__.d(__webpack_exports__, {
 /* harmony export */   "PACKAGE_VERSION": () => (/* binding */ PACKAGE_VERSION)
 /* harmony export */ });
-const PACKAGE_VERSION = "0.21.0";
+const PACKAGE_VERSION = "0.21.1";
 
 /***/ })