def increase(self, seconds):
if self.state is TimerState.running:<EOL><INDENT>new_compare = self.compare + seconds<EOL>if new_compare > time.time():<EOL><INDENT>self.compare = new_compare<EOL><DEDENT><DEDENT>
Change remainig time value.

:param int seconds: Seconds to add. Negative value substracts from
 remaining time.