Smoothing observations

Our plugins can reduce the amount of observations produced or sent to the platform by smoothing them. For instance of sending one observation each time a scanner detects a beacon, it can send only an observation when it sees it for the first time (new device detected) or when it is not seen anymore (lost a device). Some observations are only useful when the state has changed: a water detection sensor could send an observation for example every 15 seconds even when there is no water at all or it could send the observation each time it becomes wet or when the water is gone, reducing the network traffic according the user needs. We provide a tool in order to smooth the observations produced by each plugin. When used, this tool will filter the observations passed to it according to configuration provided.