Configure simple.world interval_sim and paused

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add a neural controller and set it to use

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add best-fitness.py script

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add reading weights from stdin

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add quit_time to simple.world

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add fitness rewarding for robots that walk long distances

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add pso.py script

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>