MeUltrasonicSensor is broken

[GoudronViande24]

The code is probably not complete?

the timeout is never used
same here

and here

That makes the code really slow anytime there is nothing in range for the sensor!

[Felipe-noob]

I have made a version that implements the timeout. It is available in a repo for a personal project. Since this project seems dead, I think opening a PR would be useless.