fix(core): update

ts/smarttime.plugins.ts

@@ -1,10 +1,11 @@
 // @pushrocks scope
+import * as smartdelay from '@pushrocks/smartdelay';
 import * as smartpromise from '@pushrocks/smartpromise';
 
-export { smartpromise };
+export { smartdelay, smartpromise };
 
 // third parties
+import cronParser from 'cron-parser';
 import * as luxon from 'luxon';
-import * as cron from 'cron';
 
-export { luxon, cron };
+export { cronParser, luxon };