Added autoclean

Works for search now

twint/run.py

-from . import datelock, feed, get, output, verbose
+from . import datelock, feed, get, output, verbose, storage
 from asyncio import get_event_loop
 from datetime import timedelta
 from .storage import db
@@ -16,6 +16,9 @@ class Twint:
         self.d = datelock.Set(self.config.Until, self.config.Since)
         verbose.Elastic(config.Elasticsearch)
 
+        if self.config.Pandas_clean:
+            storage.panda.clean()
+
         if not self.config.Timedelta:
             if (self.d._until - self.d._since).days > 30:
                 self.config.Timedelta = 30